Correct Rust -> Java method call semantics to avoid double-conversion

Author: TheBlueMatt

java_strings.py

@@ -849,7 +849,7 @@ def native_c_map_trait(self, struct_name, field_vars, flattened_field_vars, fiel
                 elif not fn_line.ret_ty_info.passed_as_ptr:
                     out_c += "\t" + fn_line.ret_ty_info.c_ty + " ret = (*env)->Call" + fn_line.ret_ty_info.java_ty.title() + "Method(env, obj, j_calls->" + fn_line.fn_name + "_meth"
                 else:
-                    out_c = out_c + "\t" + fn_line.ret_ty_info.rust_obj + "* ret = (" + fn_line.ret_ty_info.rust_obj + "*)(*env)->CallLongMethod(env, obj, j_calls->" + fn_line.fn_name + "_meth"
+                    out_c = out_c + "\tuint64_t ret = (*env)->CallLongMethod(env, obj, j_calls->" + fn_line.fn_name + "_meth"
 
                 for idx, arg_info in enumerate(fn_line.args_ty):
                     if arg_info.ret_conv is not None:

typescript_strings.py

@@ -723,7 +723,7 @@ class {struct_name}Holder {{
                 elif not fn_line.ret_ty_info.passed_as_ptr:
                     out_c = out_c + "\treturn js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
                 else:
-                    out_c = out_c + "\t" + fn_line.ret_ty_info.rust_obj + "* ret = (" + fn_line.ret_ty_info.rust_obj + "*)js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
+                    out_c = out_c + "\tuint32_t ret = js_invoke_function_" + str(len(fn_line.args_ty)) + "(j_calls->" + fn_line.fn_name + "_meth"
 
                 for idx, arg_info in enumerate(fn_line.args_ty):
                     if arg_info.ret_conv is not None: