[NFC] Remove trailing space

sed -Ei 's/[[:space:]]+$//' include/**/*.{def,h,td} lib/**/*.{cpp,h,td}
diff --git a/clang/lib/Sema/SemaTemplateVariadic.cpp b/clang/lib/Sema/SemaTemplateVariadic.cpp
index d947d6d..825b062 100644
--- a/clang/lib/Sema/SemaTemplateVariadic.cpp
+++ b/clang/lib/Sema/SemaTemplateVariadic.cpp
@@ -940,7 +940,7 @@
   if (Expr *TRC = D.getTrailingRequiresClause())
     if (TRC->containsUnexpandedParameterPack())
       return true;
-  
+
   return false;
 }