Merge pull request #5291 from stuartpb/patch-1

Fix "the dialect is not supported" error

lib/sequelize.js

@@ -188,7 +188,6 @@ var Sequelize = function(database, username, password, options) {
     dialectOptions: this.options.dialectOptions
     dialectOptions: this.options.dialectOptions
   };
   };
 
 
-  try {
   var Dialect;
   var Dialect;
   // Requiring the dialect in a switch-case to keep the
   // Requiring the dialect in a switch-case to keep the
   // require calls static. (Browserify fix)
   // require calls static. (Browserify fix)
@@ -208,11 +207,10 @@ var Sequelize = function(database, username, password, options) {
     case 'sqlite':
     case 'sqlite':
       Dialect = require('./dialects/sqlite');
       Dialect = require('./dialects/sqlite');
       break;
       break;
+    default:
+      throw new Error('The dialect ' + this.getDialect() + ' is not supported. Supported dialects: mariadb, mssql, mysql, postgres, and sqlite.');
   }
   }
   this.dialect = new Dialect(this);
   this.dialect = new Dialect(this);
-  } catch (err) {
-    throw new Error('The dialect ' + this.getDialect() + ' is not supported. Supported dialects: mariadb, mssql, mysql, postgres, and sqlite. ('+err+')');
-  }
 
 
   this.dialect.QueryGenerator.typeValidation = options.typeValidation;
   this.dialect.QueryGenerator.typeValidation = options.typeValidation;