Added `zeroinitializer' keyword.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13253 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/vim/llvm.vim b/utils/vim/llvm.vim
index f122906..619aa07 100644
--- a/utils/vim/llvm.vim
+++ b/utils/vim/llvm.vim
@@ -24,7 +24,7 @@
 syn keyword llvmStatement ret br switch invoke unwind
 syn keyword llvmStatement malloc alloca free load store getelementptr
 
-syn keyword llvmStatement begin end true false
+syn keyword llvmStatement begin end true false zeroinitializer
 syn keyword llvmStatement declare global constant const
 syn keyword llvmStatement internal uninitialized external implementation
 syn keyword llvmStatement linkonce weak appending