test: add extra space in test failure output

test: add extra space in test failure output · nodejs/node@3175559

Original file line number	Diff line number	Diff line change
`@@ -70,7 +70,7 @@ def IsFailureOutput(self, output):`
`70`	`70`	`raw_lines = (output.stdout + output.stderr).split('\n')`
`71`	`71`	`outlines = [ s.rstrip() for s in raw_lines if not self.IgnoreLine(s) ]`
`72`	`72`	`if len(outlines) != len(patterns):`
`73`		`-print("length differs.")`
	`73`	`+print(" length differs.")`
`74`	`74`	`print("expect=%d" % len(patterns))`
`75`	`75`	`print("actual=%d" % len(outlines))`
`76`	`76`	`print("patterns:")`
`@@ -82,7 +82,7 @@ def IsFailureOutput(self, output):`
`82`	`82`	`return True`
`83`	`83`	`for i in range(len(patterns)):`
`84`	`84`	`if not re.match(patterns[i], outlines[i]):`
`85`		`-print("match failed")`
	`85`	`+print(" match failed")`
`86`	`86`	`print("line=%d" % i)`
`87`	`87`	`print("expect=%s" % patterns[i])`
`88`	`88`	`print("actual=%s" % outlines[i])`