Fix MSVC warnings

src/cache.c

@@ -78,7 +78,7 @@ void *git_cache_get(git_cache *cache, const git_oid *oid)
 {
 	const uint32_t *hash;
 	size_t i, pos, found = 0;
-	cache_node *node;
+	cache_node *node = NULL;
 
 	hash = (const uint32_t *)oid->id;
 

src/commit.c

@@ -101,7 +101,7 @@ int git_commit_create_v(
 		oid, repo, update_ref, author, committer, message,
 		tree_oid, parent_count, oids);
 
-	free(oids);
+	free((void *)oids);
 	return error;
 }
 
@@ -132,7 +132,7 @@ int git_commit_create_ov(
 		git_object_id((git_object *)tree),
 		parent_count, oids);
 
-	free(oids);
+	free((void *)oids);
 	return error;
 }
 
@@ -160,7 +160,7 @@ int git_commit_create_o(
 		git_object_id((git_object *)tree),
 		parent_count, oids);
 	
-	free(oids);
+	free((void *)oids);
 	return error;
 }
 

tests/t13-threads.c

@@ -32,13 +32,6 @@ typedef struct {
 	unsigned int __dummy;
 } ttest_obj;
 
-void *cache0_thread(void *data)
-{
-	git_cache *cache = (git_cache*)data;
-	unsigned int num;
-
-}
-
 BEGIN_TEST(cache0, "run several threads polling the cache at the same time")
 
 END_TEST