[GlobalISel] More fix for the size vs. type typo. NFC.

I missed those in my previous commit (r290378).

llvm-svn: 290387
diff --git a/llvm/lib/CodeGen/MachineVerifier.cpp b/llvm/lib/CodeGen/MachineVerifier.cpp
index 7eb42ec..426a466 100644
--- a/llvm/lib/CodeGen/MachineVerifier.cpp
+++ b/llvm/lib/CodeGen/MachineVerifier.cpp
@@ -1023,7 +1023,7 @@
             return;
           }
 
-          // The gvreg must have a size and it must not have a SubIdx.
+          // The gvreg must have a type and it must not have a SubIdx.
           LLT Ty = MRI->getType(Reg);
           if (!Ty.isValid()) {
             report("Generic virtual register must have a valid type", MO,