update comment on asm.js+EMULATED_FUNCTION_POINTERS

emscripten.py

@@ -1282,11 +1282,10 @@ def create_exports(exported_implemented_functions, in_table, function_table_data
   quote = quoter()
   asm_runtime_funcs = create_asm_runtime_funcs()
   all_exported = exported_implemented_functions + asm_runtime_funcs + function_tables(function_table_data)
-  # In an asm shared library + emulated function pointers, export all the table so that
-  # we can easily find the function pointer for each function. The reason is that for asm, we use 
-  # JS to add the side module's functions to the shared table with the parent, so they must 
-  # be exported for that JS to access them. In wasm we don't need that, as the wasm can 
-  # directly add its functions to the Table. 
+  # In asm.js + emulated function pointers, export all the table because we use
+  # JS to add the asm.js module's functions to the table (which is external
+  # in this mode). In wasm, we don't need that since wasm modules can
+  # directly add functions to the imported Table.
   if not shared.Settings.WASM and shared.Settings.EMULATED_FUNCTION_POINTERS:
     all_exported += in_table
   exports = []