Fix two leaks found by LSan (one is test-only).

The result of llvm::MemoryBuffer::getMemBuffer() needs to be freed. Don't
pass "don't free" flag to overrideFileContents() to fix.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@207075 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Index/SimpleFormatContext.h

@@ -51,7 +51,7 @@ public:
         llvm::MemoryBuffer::getMemBuffer(Content);
     const FileEntry *Entry =
         Files.getVirtualFile(Name, Source->getBufferSize(), 0);
-    Sources.overrideFileContents(Entry, Source, true);
+    Sources.overrideFileContents(Entry, Source);
     assert(Entry != NULL);
     return Sources.createFileID(Entry, SourceLocation(), SrcMgr::C_User);
   }

unittests/Tooling/RewriterTestContext.h

@@ -52,7 +52,7 @@ class RewriterTestContext {
       llvm::MemoryBuffer::getMemBuffer(Content);
     const FileEntry *Entry =
       Files.getVirtualFile(Name, Source->getBufferSize(), 0);
-    Sources.overrideFileContents(Entry, Source, true);
+    Sources.overrideFileContents(Entry, Source);
     assert(Entry != NULL);
     return Sources.createFileID(Entry, SourceLocation(), SrcMgr::C_User);
   }