Fix smell with incrementation

Author: AuroraLS3

Plan/src/main/java/com/djrapitops/plan/system/database/databases/sql/MySQLDB.java

@@ -29,6 +29,18 @@ public MySQLDB(Supplier<Locale> locale) {
         super(locale);
     }
 
+    private static synchronized void increment() {
+        increment++;
+    }
+
+    /**
+     * @return the name of the Database
+     */
+    @Override
+    public String getName() {
+        return "MySQL";
+    }
+
     /**
      * Setups the {@link HikariDataSource}
      */
@@ -55,7 +67,7 @@ public void setupDataSource() throws DBInitException {
 
             config.setPoolName("Plan Connection Pool-" + increment);
             config.setDriverClassName("com.mysql.jdbc.Driver");
-            increment++;
+            increment();
 
             config.setAutoCommit(true);
             config.setMaximumPoolSize(8);
@@ -69,14 +81,6 @@ public void setupDataSource() throws DBInitException {
         }
     }
 
-    /**
-     * @return the name of the Database
-     */
-    @Override
-    public String getName() {
-        return "MySQL";
-    }
-
     @Override
     public Connection getConnection() throws SQLException {
         Connection connection = dataSource.getConnection();