tools: fail tests if malformed status file

PR-URL: nodejs#16703
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

tools/test.py

@@ -1349,9 +1349,7 @@ def ReadConfigurationInto(path, sections, defs):
     if prefix_match:
       prefix = SplitPath(prefix_match.group(1).strip())
       continue
-    print "Malformed line: '%s'." % line
-    return False
-  return True
+    raise Exception("Malformed line: '%s'." % line)
 
 
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