add a exception catch

remix-solidity/src/compiler/compiler-worker.js

@@ -16,7 +16,11 @@ module.exports = function (self) {
 
         compileJSON = null
 
+        try {
           self.importScripts(data.data)
+        } catch (exception) {
+          return JSON.stringify({ error: 'Uncaught JavaScript exception:\n' + exception })
+        }
         
         var compiler = solc(self.Module)