Spell `definitely' correctly.

llvm-svn: 8466
diff --git a/llvm/lib/Transforms/IPO/DeadArgumentElimination.cpp b/llvm/lib/Transforms/IPO/DeadArgumentElimination.cpp
index c4e73af..f8aaf35 100644
--- a/llvm/lib/Transforms/IPO/DeadArgumentElimination.cpp
+++ b/llvm/lib/Transforms/IPO/DeadArgumentElimination.cpp
@@ -262,7 +262,7 @@
           LiveArguments.insert(AI);
           break;
         case Dead:
-          DEBUG(std::cerr << "    Arg definately dead: " <<AI->getName()<<"\n");
+          DEBUG(std::cerr << "    Arg definitely dead: " <<AI->getName()<<"\n");
           DeadArguments.insert(AI);
           break;
         case MaybeLive: