Fix MCJITCAPITest.cpp unit test on Windows.

MCJIT on Windows requires an explicit target triple with "-elf" appended to generate objects in ELF format.  The common test framework was setting up this triple, but it wasn't passed to the C API in the test.

llvm-svn: 181614

llvm/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp

@@ -48,6 +48,8 @@ TEST_F(MCJITCAPITest, simple_function) {
   // Creates a function that returns 42, compiles it, and runs it.
   
   LLVMModuleRef module = LLVMModuleCreateWithName("simple_module");
+
+  LLVMSetTarget(module, HostTriple.c_str());
   
   LLVMValueRef function = LLVMAddFunction(
     module, "simple_function", LLVMFunctionType(LLVMInt32Type(), 0, 0, 0));