GenerateDoctrineCrudCommand:generateForm() silently fails when the form...
minor #305  GenerateDoctrineCrudCommand:generateForm() silently fails when the form... (skafandri)

This PR was squashed before being merged into the 2.3.x-dev branch (closes #305).

Discussion
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 GenerateDoctrineCrudCommand:generateForm() silently fails when the form...

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #304
| License       | MIT
| Doc PR        | SensioGeneratorBundle#304

Commits
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014e3e9  GenerateDoctrineCrudCommand:generateForm() silently fails when the form...