Fix constness problems now that the cast operators preserve the constness
of their argument


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2758 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bytecode/Reader/InstructionReader.cpp b/lib/Bytecode/Reader/InstructionReader.cpp
index 9b98d94..0916b2b 100644
--- a/lib/Bytecode/Reader/InstructionReader.cpp
+++ b/lib/Bytecode/Reader/InstructionReader.cpp
@@ -228,9 +228,9 @@
     if (M == 0) return failure(true);
 
     // Check to make sure we have a pointer to method type
-    PointerType *PTy = dyn_cast<PointerType>(M->getType());
+    const PointerType *PTy = dyn_cast<PointerType>(M->getType());
     if (PTy == 0) return failure(true);
-    FunctionType *MTy = dyn_cast<FunctionType>(PTy->getElementType());
+    const FunctionType *MTy = dyn_cast<FunctionType>(PTy->getElementType());
     if (MTy == 0) return failure(true);
 
     vector<Value *> Params;
@@ -288,9 +288,9 @@
     if (M == 0) return failure(true);
 
     // Check to make sure we have a pointer to method type
-    PointerType *PTy = dyn_cast<PointerType>(M->getType());
+    const PointerType *PTy = dyn_cast<PointerType>(M->getType());
     if (PTy == 0) return failure(true);
-    FunctionType *MTy = dyn_cast<FunctionType>(PTy->getElementType());
+    const FunctionType *MTy = dyn_cast<FunctionType>(PTy->getElementType());
     if (MTy == 0) return failure(true);
 
     vector<Value *> Params;