WebAssembly NFC: fix build warning

WebAssemblyFrameLowering.cpp:158:44: warning: enumeral and non-enumeral type in conditional expression [enabled by default]

llvm-svn: 259303
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp
index 2edcc3f..e0ff508 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp
@@ -155,10 +155,10 @@
                                         MachineMemOperand::MOLoad, 4, 4);
   // Load the SP value.
   BuildMI(MBB, InsertPt, DL, TII->get(WebAssembly::LOAD_I32),
-          StackSize ? SPReg : WebAssembly::SP32)
-      .addImm(0) // offset
+          StackSize ? SPReg : (unsigned)WebAssembly::SP32)
+      .addImm(0)     // offset
       .addReg(SPReg) // addr
-      .addImm(2) // p2align
+      .addImm(2)     // p2align
       .addMemOperand(LoadMMO);
 
   unsigned OffsetReg = 0;