Fix t5516-fetch for systems where `wc -l` outputs whitespace.

diff --git a/t/t5515-fetch-merge-logic.sh b/t/t5515-fetch-merge-logic.sh
index 0b600bb429b69df02d971913e4b658bf7e313277..6c9cc67508f4351f5627b613215e6b88b0adc49a 100755 (executable)
--- a/t/t5515-fetch-merge-logic.sh
+++ b/t/t5515-fetch-merge-logic.sh
@@ -149,7 +149,7 @@ do
                } >"$actual" &&
                if test -f "$expect"
                then
-                       diff -u "$expect" "$actual" &&
+                       git diff -u "$expect" "$actual" &&
                        rm -f "$actual"
                else
                        # this is to help developing new tests.