Fix typos found by http://github.com/lyda/misspell-check

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157885 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodePlacementOpt.cpp b/lib/CodeGen/CodePlacementOpt.cpp
index c13c05e..99233df 100644
--- a/lib/CodeGen/CodePlacementOpt.cpp
+++ b/lib/CodeGen/CodePlacementOpt.cpp
@@ -201,7 +201,7 @@
           // fallthrough edge.
           if (!Prior->isSuccessor(End))
             goto next_pred;
-          // Otherwise we can stop scanning and procede to move the blocks.
+          // Otherwise we can stop scanning and proceed to move the blocks.
           break;
         }
         // If we hit a switch or something complicated, don't move anything