Fix #79424 ext/zip: don't use gl_pathc after call to globfree

This breaks on Linux with the musl libc, since it zeroes out gl_pathc during
globfree.

Author: maxcrees

NEWS

@@ -34,6 +34,8 @@ PHP                                                                        NEWS
 
 - Zip:
   . Fixed Bug #79296 (ZipArchive::open fails on empty file). (Remi)
+  . Fixed bug #79424 (php_zip_glob uses gl_pathc after call to globfree).
+    (Max Rees)
 
 19 Mar 2020, PHP 7.3.16
 

ext/zip/php_zip.c

@@ -606,8 +606,9 @@ int php_zip_glob(char *pattern, int pattern_len, zend_long flags, zval *return_v
 		add_next_index_string(return_value, globbuf.gl_pathv[n]+cwd_skip);
 	}
 
+	ret = globbuf.gl_pathc;
 	globfree(&globbuf);
-	return globbuf.gl_pathc;
+	return ret;
 #else
 	zend_throw_error(NULL, "Glob support is not available");
 	return 0;