Add typedefs for Densemaps containing SmallVectors to avoid repeating the SmallVector size when creating iterators for the DenseMap.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185682 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplateDeduction.cpp b/lib/Sema/SemaTemplateDeduction.cpp
index 0fd29ea..0d17c87 100644
--- a/lib/Sema/SemaTemplateDeduction.cpp
+++ b/lib/Sema/SemaTemplateDeduction.cpp
@@ -2795,7 +2795,7 @@
   // keep track of these diagnostics. They'll be emitted if this specialization
   // is actually used.
   if (Info.diag_begin() != Info.diag_end()) {
-    llvm::DenseMap<Decl *, SmallVector<PartialDiagnosticAt, 1> >::iterator
+    SuppressedDiagnosticsMap::iterator
       Pos = SuppressedDiagnostics.find(Specialization->getCanonicalDecl());
     if (Pos == SuppressedDiagnostics.end())
         SuppressedDiagnostics[Specialization->getCanonicalDecl()]