iUse new form of pop_back to make code more concise

llvm-svn: 2202
diff --git a/llvm/lib/Target/Sparc/PrologEpilogCodeInserter.cpp b/llvm/lib/Target/Sparc/PrologEpilogCodeInserter.cpp
index fc88353..2dad572 100644
--- a/llvm/lib/Target/Sparc/PrologEpilogCodeInserter.cpp
+++ b/llvm/lib/Target/Sparc/PrologEpilogCodeInserter.cpp
@@ -130,9 +130,8 @@
         while (termMvec.back()->getOpCode() == NOP)
           {
             assert( termMvec.back() == bbMvec.back());
-            delete termMvec.back();
+            delete bbMvec.pop_back();
             termMvec.pop_back();
-            bbMvec.pop_back();
             ++numNOPs;
           }
         assert(termMvec.back() == bbMvec.back());