Fix formatting

Author: taranu

python/lsst/sconsUtils/tests.py

@@ -265,7 +265,7 @@ def run(self, fileGlob):
                 # the root directory
                 filePrefix = "file:"
                 if a.startswith(filePrefix):  # they explicitly said that this was a file
-                    a = os.path.join(self._cwd, a[len(filePrefix) :])
+                    a = os.path.join(self._cwd, a[len(filePrefix):])
                 else:
                     try:  # see if it's a file
                         os.stat(a)