t5536: let 'test_i18ngrep' read the file without redirection

Redirecting 'test_i18ngrep's standard input from a file will interfere
with the linting that will be added in a later patch.

Signed-off-by: SZEDER Gábor <[email protected]>
Reviewed-by: Jeff King <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: szeder

t/t5536-fetch-conflicts.sh

@@ -22,7 +22,7 @@ verify_stderr () {
 	cat >expected &&
 	# We're not interested in the error
 	# "fatal: The remote end hung up unexpectedly":
-	test_i18ngrep -E '^(fatal|warning):' <error | grep -v 'hung up' >actual | sort &&
+	test_i18ngrep -E '^(fatal|warning):' error | grep -v 'hung up' >actual | sort &&
 	test_i18ncmp expected actual
 }