[gn build] Port be0efa1

Author: llvmgnsyncbot

llvm/utils/gn/secondary/llvm/lib/Target/WebAssembly/BUILD.gn

@@ -45,6 +45,7 @@ static_library("LLVMWebAssemblyCodeGen") {
     "WebAssemblyFixFunctionBitcasts.cpp",
     "WebAssemblyFixIrreducibleControlFlow.cpp",
     "WebAssemblyFrameLowering.cpp",
+    "WebAssemblyHandleEHTerminatePads.cpp",
     "WebAssemblyISelDAGToDAG.cpp",
     "WebAssemblyISelLowering.cpp",
     "WebAssemblyInstrInfo.cpp",