[PATCH] [compiler-rt] Fix alloca_instruments_all_paddings.cc test to work under higher -O levels

[Alexey Samsonov]

LGTM


================
Comment at: lib/Transforms/Instrumentation/AddressSanitizer.cpp:1647
@@ -1646,3 +1646,3 @@
 
   if (ClInstrumentAllocas)
     // Handle dynamic allocas.
----------------
Please add {} for this if as well.

http://reviews.llvm.org/D7810

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