fix leak

Author: weltling

win32/ioutil.c

@@ -467,6 +467,7 @@ PW32IO size_t php_win32_ioutil_dirname(char *path, size_t len)
 		endw--;
 	}
 	if (endw < pathw) {
+		free(startw);
 		/* The path only contained slashes */
 		path[0] = PHP_WIN32_IOUTIL_DEFAULT_SLASH;
 		path[1] = '\0';
@@ -478,6 +479,7 @@ PW32IO size_t php_win32_ioutil_dirname(char *path, size_t len)
 		endw--;
 	}
 	if (endw < pathw) {
+		free(startw);
 		path[0] = '.';
 		path[1] = '\0';
 		return 1 + len_adjust;
@@ -488,6 +490,7 @@ PW32IO size_t php_win32_ioutil_dirname(char *path, size_t len)
 		endw--;
 	}
 	if (endw < pathw) {
+		free(startw);
 		path[0] = PHP_WIN32_IOUTIL_DEFAULT_SLASH;
 		path[1] = '\0';
 		return 1 + len_adjust;