Switch to a C-style cast here to silence a brain-dead MSVC warning. It

complains about the truncation of a 64-bit constant to a 32-bit value
when size_t is 32-bits wide, but *only with static_cast*!!! The exact
signal that should *silence* such a warning, and in fact does silence it
with both GCC and Clang.

Anyways, this was causing grief for all the MSVC builds, so pointless
change made. Thanks to Nikola on IRC for confirming that this works.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152021 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ADT/Hashing.h

@@ -338,7 +338,7 @@ inline size_t get_execution_seed() {
   // called, return that instead of the per-execution seed.
   const uint64_t seed_prime = 0xff51afd7ed558ccdULL;
   static size_t seed = fixed_seed_override ? fixed_seed_override
-                                           : static_cast<size_t>(seed_prime);
+                                           : (size_t)seed_prime;
   return seed;
 }