Fix review

Author: CatInBeard

goinkview.c

@@ -5,5 +5,5 @@ int main_handler(int t, int p1, int p2) {
 }
 
 void c_keyboard_handler(char* text) {
-    keyboardHandler(text);    
+    goKeyboardHandler(text);    
 }

keyboard.go

@@ -13,8 +13,8 @@ import (
 	"unsafe"
 )
 
-//export keyboardHandler
-func keyboardHandler(text *C.char) {
+//export goKeyboardHandler
+func goKeyboardHandler(text *C.char) {
 	userKeyboardHandler(C.GoString(text))
 }
 
@@ -28,6 +28,10 @@ func SetKeyboardHandler(kh KeyboardHandler) {
 
 func OpenKeyboard(placeholder string, buflen int) {
 
+	if buflen <= 0 {
+		buflen = 1024
+	}
+
 	buffer := make([]byte, buflen)
 
 	ctitle := C.CString(placeholder)