JS Bindings: Use stringToUTF8OnStack instead of deprecated allocateUTF8OnStack (WebAssembly#6324)

This avoids a warning on recent Emscripten.

Author: kripken

CMakeLists.txt

@@ -464,7 +464,7 @@ if(EMSCRIPTEN)
   target_link_libraries(binaryen_wasm "-sEXPORT_NAME=Binaryen")
   target_link_libraries(binaryen_wasm "-sNODERAWFS=0")
   target_link_libraries(binaryen_wasm "-sEXPORT_ES6")
-  target_link_libraries(binaryen_wasm "-sEXPORTED_RUNTIME_METHODS=allocateUTF8OnStack,stringToAscii")
+  target_link_libraries(binaryen_wasm "-sEXPORTED_RUNTIME_METHODS=stringToUTF8OnStack,stringToAscii")
   target_link_libraries(binaryen_wasm "-sEXPORTED_FUNCTIONS=_malloc,_free")
   target_link_libraries(binaryen_wasm "--post-js=${CMAKE_CURRENT_SOURCE_DIR}/src/js/binaryen.js-post.js")
   target_link_libraries(binaryen_wasm "-msign-ext")
@@ -502,7 +502,7 @@ if(EMSCRIPTEN)
   else()
     target_link_libraries(binaryen_js "-sEXPORT_ES6=1")
   endif()
-  target_link_libraries(binaryen_js "-sEXPORTED_RUNTIME_METHODS=allocateUTF8OnStack,stringToAscii")
+  target_link_libraries(binaryen_js "-sEXPORTED_RUNTIME_METHODS=stringToUTF8OnStack,stringToAscii")
   target_link_libraries(binaryen_js "-sEXPORTED_FUNCTIONS=_malloc,_free")
   target_link_libraries(binaryen_js "--post-js=${CMAKE_CURRENT_SOURCE_DIR}/src/js/binaryen.js-post.js")
   # js_of_ocaml needs a specified variable with special comment to provide the library to consumers

src/js/binaryen.js-post.js

@@ -9,7 +9,7 @@ function preserveStack(func) {
 }
 
 function strToStack(str) {
-  return str ? allocateUTF8OnStack(str) : 0;
+  return str ? stringToUTF8OnStack(str) : 0;
 }
 
 function i32sToStack(i32s) {