src/ldebug.js: Fix incorrect error messages

Previously could get odd things, e.g. `1-nil` would throw:
> attempt to perform arithmetic on a number value

2 files changed, 2 insertions, 3 deletions

diff --git a/src/ldebug.js b/src/ldebug.js
index b411e0a..50625e5 100644
--- a/src/ldebug.js
+++ b/src/ldebug.js
@@ -551,8 +551,7 @@ const luaG_concaterror = function(L, p1, p2) {
 ** Error when both values are convertible to numbers, but not to integers
 */
 const luaG_opinterror = function(L, p1, p2, msg) {
-    let temp = lvm.tonumber(p1);
-    if (temp !== false)
+    if (lvm.tonumber(p1) === false)
         p2 = p1;
     luaG_typeerror(L, p2, msg);
 };
diff --git a/tests/ldebug.js b/tests/ldebug.js
index ba5c966..fe6e83d 100644
--- a/tests/ldebug.js
+++ b/tests/ldebug.js
@@ -175,7 +175,7 @@ test('luaG_opinterror', function (t) {
     }, "JS Lua program ran without error");
 
     t.ok(
-        lua.lua_tojsstring(L, -1).endsWith("attempt to perform arithmetic on a string value"),
+        lua.lua_tojsstring(L, -1).endsWith("attempt to perform arithmetic on a table value"),
         "Correct error was thrown"
     );
 });