Fix some trailing whitespace (on a blank line) to cycle/test bots.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168340 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaChecking.cpp b/lib/Sema/SemaChecking.cpp
index 8e0a983..33dcb3a 100644
--- a/lib/Sema/SemaChecking.cpp
+++ b/lib/Sema/SemaChecking.cpp
@@ -4905,7 +4905,7 @@
     // People want to build with -Wshorten-64-to-32 and not -Wconversion.
     if (S.SourceMgr.isInSystemMacro(CC))
       return;
-    
+
     if (TargetRange.Width == 32 && S.Context.getIntWidth(E->getType()) == 64)
       return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_64_32,
                              /* pruneControlFlow */ true);