[PATCH, 4.0] Fix PR c/22052, not rejecting redefinition of inline functions

[Andrew Pinski <pinskia at physics dot uc dot edu>]

The problem here is that I messed up the if statement checking both
decls have "extern inline".  This patch fixes that mistake.

It is also the 4.0 version of the patch I posted here:
http://gcc.gnu.org/ml/gcc-patches/2005-09/msg01070.html

OK? Bootstrapped and tested on powerpc-darwin and x86_64-linux-gnu
with no regressions.

Thanks,
Andrew Pinski

ChangeLog:

	* c-decl.c (diagnose_mismatched_decls): Fix check for both
	decls being "extern inline".

2005-06-28  Eric Christopher  <echristo@redhat.com>
	
	PR c/22052
	PR c/21975
	* gcc.dg/inline1.c: New test.
	* gcc.dg/inline2.c: Ditto.
	* gcc.dg/inline3.c: Ditto.
	* gcc.dg/inline4.c: Ditto.
	* gcc.dg/inline5.c: Ditto.

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