wininet/tests: Fix a memory leak (valgrind)

[Bruno Jesus]

For bug https://bugs.winehq.org/show_bug.cgi?id=36602
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diff --git a/dlls/wininet/tests/urlcache.c b/dlls/wininet/tests/urlcache.c
index 07800e0..35ef77d 100644
--- a/dlls/wininet/tests/urlcache.c
+++ b/dlls/wininet/tests/urlcache.c
@@ -99,6 +99,7 @@ static void test_find_url_cache_entriesA(void)
 
     ret = FindCloseUrlCache(hEnumHandle);
     ok(ret, "FindCloseUrlCache failed with error %d\n", GetLastError());
+    HeapFree(GetProcessHeap(), 0, lpCacheEntryInfo);
 }
 
 static void test_GetUrlCacheEntryInfoExA(void)