px4_getopt: whitespace

src/platforms/common/px4_getopt.c

@@ -108,11 +108,11 @@ static int reorder(int argc, char **argv, const char *options)
 }
 
 //
-// px4_getopt 
+// px4_getopt
 //
 // returns:
 //            the valid option character
-//            '?' if any option is unknown 
+//            '?' if any option is unknown
 //            -1 if no remaining options
 //
 // If the option takes an arg, myoptarg will be updated accordingly.