Fix assertion: ASSERT: "hasException" in file jsruntime/qv4engine.cpp, line 933
Fix assertion: ASSERT: "hasException" in file jsruntime/qv4engine.cpp, line 933

This was seemingly tripped by trying to catch the exception twice: once with
catchException and once with catchExceptionAsQmlError.

Change-Id: I7176d56fe6e6f748e80d0894e314ed2b8f6e751d
Done-by: Mikko Harju <e8c04089136f1dd57fb345b7b80d78f77aa5e644@jollamobile.com>
Reviewed-by: Simon Hausmann <a975102812d593b3191088e3d0aeaeb6f11dbcf5@digia.com>
Reviewed-by: Gunnar Sletta <d0b71651f3efaa9fda200bbcc395b7b82a871fdd@jollamobile.com>

matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative