app_sqlang: proper jump in the exports array

src/modules/app_sqlang/app_sqlang_api.c

@@ -1466,7 +1466,7 @@ SQInteger sqlang_open_KSR(HSQUIRRELVM J)
 	if(emods_size>1) {
 		for(k=1; k<emods_size; k++) {
 			n++;
-			_sr_crt_J_KSRMethods += n;
+			_sr_crt_J_KSRMethods = _sr_J_KSRMethods + n;
 			snprintf(mname, 128, "%s", emods[k].kexp[0].mname.s);
 			sq_pushstring(J, mname, -1);  /* stack[4] */
 			sq_newtable(J);  /* stack[5] */