fix: avoid app crashing when the Linux GTK key is empty (#2672)

* fix: avoid app crash when the Linux GTK key is empty

Fixes this error:

```
DEBUG | Log dir is: /root/.config/surrealdb_explorer/log.txt

Overriding existing handler for signal 10. Set JSC_SIGNAL_FOR_GC if you want WebKit to use a different signal
panic: runtime error: index out of range [0] with length 0

goroutine 1 [running, locked to thread]:
github.com/wailsapp/wails/v2/internal/frontend/desktop/linux.parseKey({0x0, 0x0})
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/internal/frontend/desktop/linux/keys.go:87 +0xa5
github.com/wailsapp/wails/v2/internal/frontend/desktop/linux.acceleratorToGTK(0xc0001c5f20)
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/internal/frontend/desktop/linux/keys.go:72 +0x2c
github.com/wailsapp/wails/v2/internal/frontend/desktop/linux.processMenuItem(0x866bc0?, 0xc0001c8a80, 0xc0001c8a80?)
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/internal/frontend/desktop/linux/menu.go:159 +0x40b
github.com/wailsapp/wails/v2/internal/frontend/desktop/linux.processSubmenu(0xc0001c8a20, 0x79a2a9?)
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/internal/frontend/desktop/linux/menu.go:99 +0xdc
github.com/wailsapp/wails/v2/internal/frontend/desktop/linux.processMenu(0xc00021f6c0, 0x12?)
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/internal/frontend/desktop/linux/menu.go:82 +0x46
github.com/wailsapp/wails/v2/internal/frontend/desktop/linux.(*Window).SetApplicationMenu(0xc00021f6c0, 0xc000128dc8)
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/internal/frontend/desktop/linux/menu.go:75 +0x1b6
github.com/wailsapp/wails/v2/internal/frontend/desktop/linux.NewWindow(0xc00011ba40, 0x0)
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/internal/frontend/desktop/linux/window.go:126 +0x37b
github.com/wailsapp/wails/v2/internal/frontend/desktop/linux.NewFrontend({0x1cea4e8?, 0xc00023b890}, 0xc00011ba40, 0xc000128e40, 0xc0001c8b40, {0x1ce7480?, 0xc000139840})
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/internal/frontend/desktop/linux/frontend.go:182 +0x5c5
github.com/wailsapp/wails/v2/internal/frontend/desktop.NewFrontend(...)
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/internal/frontend/desktop/desktop_linux.go:16
github.com/wailsapp/wails/v2/internal/app.CreateApp(0xc00011ba40)
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/internal/app/app_production.go:84 +0x5a5
github.com/wailsapp/wails/v2/pkg/application.(*Application).Run(0xc000131940)
        /home/aminya/go/pkg/mod/github.com/wailsapp/wails/v2@v2.5.1/pkg/application/application.go:57 +0x29
wails_vue/backend.BootApplication(0xc000131640, 0xc000138a40, 0xc0001c5320, 0xc0001c55c0, 0xc000128b40, 0xc00012ec30, 0xc000131880)
        /home/aminya/Documents/GitHub/teamnoon/SurrealDB-Explorer/backend/Application.go:103 +0x718
reflect.Value.call({0x874160?, 0x1c761f0?, 0xc000138a00?}, {0x8e263d, 0x4}, {0xc0001584d0, 0x7, 0x1c761f0?})
        /usr/local/go/src/reflect/value.go:586 +0xb0b
reflect.Value.Call({0x874160?, 0x1c761f0?, 0x1c761f0?}, {0xc0001584d0?, 0x0?, 0x1c761f0?})
        /usr/local/go/src/reflect/value.go:370 +0xbc
github.com/Envuso/go-ioc-container.(*Invocable).CallMethodWith(0xc000138a00, 0x1c761f0?, {0x0?, 0x1cef290?, 0x8bd180?})
        /home/aminya/go/pkg/mod/github.com/!envuso/go-ioc-container@v0.0.5/invocable.go:149 +0xad
github.com/Envuso/go-ioc-container.(*ContainerInstance).Call(0xc00011c630?, {0x874160?, 0x1c761f0?}, {0x0, 0x0, 0x0})
        /home/aminya/go/pkg/mod/github.com/!envuso/go-ioc-container@v0.0.5/container_invocation.go:30 +0x6c
main.main()
        /home/aminya/Documents/GitHub/teamnoon/SurrealDB-Explorer/main.go:34 +0x112
```

* fix: merge the key length comparison

v2/internal/frontend/desktop/linux/keys.go

@@ -81,7 +81,8 @@ func parseKey(key string) C.guint {
 		return result
 	}
 	// Check for unknown namedkeys
-	if len(key) > 1 {
+	// Check if we only have a single character
+	if len(key) != 1 {
 		return C.guint(0)
 	}
 	keyval := rune(key[0])

website/src/pages/changelog.mdx

@@ -14,6 +14,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Avoid app crashing when the Linux GTK key is empty by @aminya in [PR](https://github.com/wailsapp/wails/pull/2672)
+
 ## [v2.5.1] - 2023-05-16
 
 ### Breaking Changes