clar: Fix warnings in GCC/Linux

tests-clar/checkout/conflict.c

@@ -1071,6 +1071,9 @@ static void collect_progress(
 {
 	git_vector *paths = payload;
 
+	(void)completed_steps;
+	(void)total_steps;
+
 	if (path == NULL)
 		return;
 

tests-clar/pack/indexer.c

@@ -100,7 +100,6 @@ void test_pack_indexer__fix_thin(void)
 		unsigned char buffer[128];
 		int fd;
 		ssize_t read;
-		git_off_t left;
 		struct stat st;
 		const char *name = "pack-11f0f69b334728fdd8bc86b80499f22f29d85b15.pack";
 
@@ -108,7 +107,6 @@ void test_pack_indexer__fix_thin(void)
 		cl_assert(fd != -1);
 
 		cl_git_pass(p_stat(name, &st));
-		left = st.st_size;
 
 		cl_git_pass(git_indexer_stream_new(&idx, ".", NULL, NULL, NULL));
 		read = p_read(fd, buffer, sizeof(buffer));

tests-clar/threads/refdb.c

@@ -147,13 +147,16 @@ static void *delete_refs(void *arg)
 void test_threads_refdb__edit_while_iterate(void)
 {
 	int r, t;
-	git_thread th[THREADS];
 	int id[THREADS];
 	git_oid head;
 	git_reference *ref;
 	char name[128];
 	git_refdb *refdb;
 
+#ifdef GIT_THREADS
+	git_thread th[THREADS];
+#endif
+
 	g_repo = cl_git_sandbox_init("testrepo2");
 
 	cl_git_pass(git_reference_name_to_id(&head, g_repo, "HEAD"));
@@ -187,7 +190,6 @@ void test_threads_refdb__edit_while_iterate(void)
 #ifdef GIT_THREADS
 		cl_git_pass(git_thread_create(&th[t], NULL, fn, &id[t]));
 #else
-		th[t] = t;
 		fn(&id[t]);
 #endif
 	}