avoid asking ?alloc() for zero bytes.
Avoid asking for zero bytes when that change simplifies overall
logic. Later we would change the wrapper to ask for 1 byte on
platforms that return NULL for zero byte request.
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/diffcore-pathspec.c b/diffcore-pathspec.c
index 68fe009..139fe88 100644
--- a/diffcore-pathspec.c
+++ b/diffcore-pathspec.c
@@ -48,6 +48,9 @@
for (i = 0; pathspec[i]; i++)
;
speccnt = i;
+ if (!speccnt)
+ return;
+
spec = xmalloc(sizeof(*spec) * speccnt);
for (i = 0; pathspec[i]; i++) {
spec[i].spec = pathspec[i];
