Fixes warnings emitted by Visual Studio 2010 compiler.

Patch by Erik Olofsson!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126796 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/MathExtrasTest.cpp b/unittests/Support/MathExtrasTest.cpp
index 3db1f77..0a6724c 100644
--- a/unittests/Support/MathExtrasTest.cpp
+++ b/unittests/Support/MathExtrasTest.cpp
@@ -73,7 +73,7 @@
 }
 
 TEST(MathExtras, FloatBits) {
-  static const float kValue = 5632.34;
+  static const float kValue = 5632.34f;
   EXPECT_FLOAT_EQ(kValue, BitsToFloat(FloatToBits(kValue)));
 }