Recommended namespace in generator LogicException should not be prepended with '\\'

[dduenker]

The following exception recommends using the full namespace starting with \\:

maker-bundle/src/Generator.php

Line 100 in ce60831

throw new \LogicException(\sprintf('Could not determine where to locate the new class "%s", maybe try with a full namespace like "\\My\\Full\\Namespace\\%s"', $classData->getFullClassName(), $classData->getClassName()));

Doing this does not work though, the namespace has to start directly with (for example) App.