Ensure the diff hunk callback is specified before trying to dereference it

bb6aafe8 · Jacques Germishuys · 636af219 · bb6aafe8
Commit bb6aafe8 authored Jan 25, 2015 by Jacques Germishuys
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src/diff_patch.c
+2 -1

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--- a/src/diff_patch.c
+++ b/src/diff_patch.c
@@ -823,7 +823,8 @@ int git_patch__invoke_callbacks(
 	for (i = 0; !error && i < git_array_size(patch->hunks); ++i) {
 		diff_patch_hunk *h = git_array_get(patch->hunks, i);
-		error = hunk_cb(patch->delta, &h->hunk, payload);
+		if (hunk_cb)
+			error = hunk_cb(patch->delta, &h->hunk, payload);
 		if (!line_cb)
 			continue;