lib/Frontend/InitHeaderSearch.cpp: [Cygwin] Add 4.5.3.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148637 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Frontend/InitHeaderSearch.cpp

@@ -383,6 +383,7 @@ AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple, const HeaderSearchOp
 
   case llvm::Triple::Cygwin:
     // Cygwin-1.7
+    AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.5.3");
     AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.4");
     // g++-4 / Cygwin-1.5
     AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.2");