Plug some leaks

src/submodule.c

@@ -229,6 +229,7 @@ int git_submodule_lookup(
 
 		if (error < 0) {
 			git_submodule_free(sm);
+			git_buf_free(&path);
 			return error;
 		}
 
@@ -1699,6 +1700,8 @@ static int submodule_read_config(git_submodule *sm, git_config *cfg)
 	 * should be strcasecmp
 	 */
 		if (strcmp(sm->name, value) != 0) {
+			if (sm->path != sm->name)
+				git__free(sm->path);
 			sm->path = git__strdup(value);
 			GITERR_CHECK_ALLOC(sm->path);
 		}

tests/core/mkdir.c

@@ -48,6 +48,8 @@ void test_core_mkdir__absolute(void)
 	cl_assert(!git_path_isdir(path.ptr));
 	cl_git_fail(git_futils_mkdir(path.ptr, 0755, 0));
 	cl_assert(!git_path_isdir(path.ptr));
+
+	git_buf_free(&path);
 }
 
 void test_core_mkdir__basic(void)

tests/index/rename.c

@@ -77,5 +77,10 @@ void test_index_rename__casechanging(void)
 		cl_assert_equal_i(1, git_index_entrycount(index));
 	else
 		cl_assert_equal_i(2, git_index_entrycount(index));
+
+	git_index_free(index);
+	git_repository_free(repo);
+
+	cl_fixture_cleanup("rename");
 }