branch: fix segfault when resolving an invalid HEAD

diff --git a/merge-index.c b/merge-index.c
index 6df43944b08fc7789eec2314353bd1f892afbf0b..5599fd321bb4c09c1c0ce4fc62dfb9ecf5531c2b 100644 (file)
--- a/merge-index.c
+++ b/merge-index.c
@@ -2,7 +2,7 @@
 #include "run-command.h"
 
 static const char *pgm;
-static const char *arguments[8];
+static const char *arguments[9];
 static int one_shot, quiet;
 static int err;
 
@@ -36,6 +36,7 @@ static int merge_entry(int pos, const char *path)
        arguments[5] = "";
        arguments[6] = "";
        arguments[7] = "";
+       arguments[8] = NULL;
        found = 0;
        do {
                static char hexbuf[4][60];