R600: Fix bug detected by GCC warning.

R600TextureIntrinsicsReplacer.cpp:232: warning: the address of ‘ArgsType’ will always evaluate as ‘true’

This doesn't have any effect on the output as a vararg intrinsic behaves the
same way as a non-vararg one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182293 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed