[PATCH] [Support] Make GetMallocUsage() aware of jemalloc

[David Majnemer]

REPOSITORY
  rL LLVM

================
Comment at: lib/Support/Unix/Process.inc:109-110
@@ -101,1 +108,4 @@
+    return alloc;
+  else
+    return 0;
 #elif defined(HAVE_SBRK)
----------------
No need for an `else`.

http://reviews.llvm.org/D7663

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