better handling of /MM so that it doesn't tear a hole in space-time

package.nw/data/mh-root-prefixed.json

@@ -43923,6 +43923,31 @@
     "worked_modes": {},
     "confirmed_modes": {}
   },
+  "390": {
+    "dxcc": "0",
+    "cc": "-",
+    "ccc": "-",
+    "name": "None",
+    "continent": "-",
+    "ituzone": ["-"],
+    "cqzone": ["-"],
+    "timezone": "1",
+    "ccode": "-",
+    "aname": "None",
+    "mh": [],
+    "prefix": [],
+    "worked": false,
+    "confirmed": false,
+    "flag": "un.png",
+    "pp": "-",
+    "lat": 0.0,
+    "lon": 0.0,
+    "geo": "deleted",
+    "worked_bands": {},
+    "confirmed_bands": {},
+    "worked_modes": {},
+    "confirmed_modes": {}
+  },
   "-1": {
     "dxcc": "-1",
     "cc": "-",

package.nw/lib/gt.js

@@ -12143,7 +12143,7 @@ function callsignToDxcc(insign)
     {
       if (parts[end].toUpperCase() == "MM")
       {
-        return -1;
+        return 0;
       }
       parts.pop();
       end = parts.length - 1;