fix code style if trivial one line difference

src/systemcmds/tests/test_rc.c

@@ -126,7 +126,7 @@ int test_rc(int argc, char *argv[])
 						warnx("TIMEOUT, less than 10 Hz updates");
 						(void)close(_rc_sub);
 						return ERROR;
-					} 
+					}
 
 				} else {
 					/* key pressed, bye bye */