Staging: rtl8192e: Added braces around else

Staging: rtl8192e: Added braces around else

This addresses two issues raised by checkpatch.pl:

     $ ./scripts/checkpatch.pl --terse -f drivers/staging/rtl8192e/rtllib_wx.c
     CHECK: braces {} should be used on all arms of this statement
     CHECK: Unbalanced braces around else statement

The coding style rule with not using unnecessary braces around if/else
does not apply if only one branch is a single statement.

Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Signed-off-by: Felix Schlepper <f3sch.git@outlook.com>
Link: https://lore.kernel.org/r/651f51d9f92e8a445ceaf9f2073f16dd10458a74.1656667089.git.f3sch.git@outlook.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>