[PATCH] fix build with --enable-developer-warnings and gcc3.4

[Tollef Fog Heen]

]] Nils Goroll

> >d9492da540430103b9dcd6844eb59b508c061d66 effectively breaks builds with gcc 3.4.
> 
> ... only when developer warnings are enabled.
> 
> Patch attached.

I think this looks reasonable, so feel free to commit.

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Tollef Fog Heen
Technical lead | Varnish Software AS
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