Fix a bug in a recent refactoring that broke a bunch of stuff.

llvm-svn: 29649
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 9e54ada..067063d 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -1216,7 +1216,7 @@
   NodeTys.push_back(MVT::Other);
   
   // If the function returns void, just return the chain.
-  if (NumResults == 1)
+  if (NumResults == 0)
     return Chain;
   
   // Otherwise, merge everything together with a MERGE_VALUES node.