Fix #454 Improve Samsung detection

src/ua-parser.js

@@ -540,7 +540,7 @@
             /smart-tv.+(samsung)/i
             ], [VENDOR, [TYPE, SMARTTV], MODEL], [
             /((s[cgp]h-\w+|gt-\w+|galaxy\snexus|sm-\w[\w\d]+))/i,
-            /(sam[sung]*)[\s-]*(\w+-?[\w-]*)/i,
+            /\s(sam)(?:sung)[\s-]([\w-]+)/i,
             /sec-((sgh\w+))/i
             ], [[VENDOR, 'Samsung'], MODEL, [TYPE, MOBILE]], [
 

test/device-test.json

@@ -1378,5 +1378,14 @@
     "expect": {
         "type": "mobile"
     }
+  },
+  {
+    "desc": "Issue #454",
+    "ua": "Mosamzilla/5.0 (Windows; U; Win98; en-US; rv:1.7.5) Gecko/20050603 Netscape/8.0.2",
+    "expect": {
+        "vendor": "undefined",
+        "model": "undefined",
+        "type": "undefined"
+    }
   }
 ]