Fix global config crash (#144)

No idea what that feature even is, but fixed

src/main/java/knightminer/inspirations/common/Config.java

@@ -648,8 +648,12 @@ private static String updateConfig(String line, String t, String f) {
 	 * @return Config version
 	 */
 	private static double getConfigVersion() {
+		String version = configFile.getLoadedConfigVersion();
+		if(version == null) {
+			return Double.NaN;
+		}
 		try {
-			return Double.parseDouble(configFile.getLoadedConfigVersion());
+			return Double.parseDouble(version);
 		} catch (NumberFormatException e) {
 			return Double.NaN;
 		}