re PR c/20000 (missing warning for noreturn function returning non-void)

2010-06-06  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	PR c/20000
        * c-decl.c (grokdeclarator): Delete warning.
testsuite/	
        * c-c++-common/pr20000.c: New.

From-SVN: r160346