improve readability of stdlib: fix indentation and remove trailing spaces

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>

Change-Id: I7dd90a0816b5376ffc1de4499d56935e0bd574a1

libc/stdlib/putenv.c

@@ -42,7 +42,7 @@ putenv(const char *str)
 	if ((equal = strchr(p, '=')) == NULL) {
 		(void)free(p);
 		return (-1);
-  }
+	}
 	*equal = '\0';
 	rval = setenv(p, equal + 1, 1);
 	(void)free(p);