Bug 1119072, Part 10: Work around internal compiler error in VS2015 (js), r=waldo

--HG--
extra : rebase_source : 1892631f8130c7eb09876b766fc13ad649e8616e

js/src/jit/LIR.cpp

@@ -110,7 +110,9 @@ LBlock::init(TempAllocator &alloc)
             if (!inputs)
                 return false;
 
-            LPhi *lphi = new (&phis_[phiIndex++]) LPhi(phi, inputs);
+            // MSVC 2015 cannot handle "new (&phis_[phiIndex++])"
+            void *addr = &phis_[phiIndex++];
+            LPhi *lphi = new (addr) LPhi(phi, inputs);
             lphi->setBlock(this);
         }
     }