Fall back to default indentation

the `indent()` just returns the number of whitespace columns at the start of the line, and that on the current line is redundant and doesn't do anything. the default js indent file just turns on cindent so the `cindent()` function is the equivalent.

Author: bounceme

after/indent/jsx.vim

@@ -87,7 +87,7 @@ fu! GetJsxIndent()
       " For pangloss/vim-javascript.
       let ind = GetJavascriptIndent()
     else
-      let ind = indent(v:lnum)
+      let ind = cindent(v:lnum)
     endif
   endif