t7501: always use test_cmp instead of diff

diff --git a/t/t7603-merge-reduce-heads.sh b/t/t7603-merge-reduce-heads.sh
index 17b19dc11f2b1a5d26a16f447733880f3cf30d26..b47b7b9757dffe2d3d41127b43ffa929505c0e77 100755 (executable)
--- a/t/t7603-merge-reduce-heads.sh
+++ b/t/t7603-merge-reduce-heads.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-test_description='git-merge
+test_description='git merge
 
 Testing octopus merge when reducing parents to independent branches.'