Fix compilation on OpenBSD

src/unix/realpath.c

@@ -22,7 +22,7 @@ char *p_realpath(const char *pathname, char *resolved)
 
 	/* Figure out if the file exists */
 	if (!access(ret, F_OK))
-		ret;
+		return ret;
 
 	return NULL;
 }

src/util.c

@@ -672,7 +672,7 @@ static int GIT_STDLIB_CALL git__qsort_r_glue_cmp(
 void git__qsort_r(
 	void *els, size_t nel, size_t elsize, git__sort_r_cmp cmp, void *payload)
 {
-#if defined(__MINGW32__)
+#if defined(__MINGW32__) || defined(__OpenBSD__)
 	git__insertsort_r(els, nel, elsize, NULL, cmp, payload);
 #elif defined(GIT_WIN32)
 	git__qsort_r_glue glue = { cmp, payload };