Fix #1463: Correct file input unlock after file validation errors

CHANGE.md

@@ -6,6 +6,7 @@ Change Log: `bootstrap-fileinput`
 **Date:** _under development_
 
 - (enh #1464): Correct preview frame float styling issues.
+- (bug #1463): Correct file input unlock after file validation errors (for non-ajax mode).
 - (bug #1460): Correct `filebatchselected` event trigger.
 - (bug #1459): Upload Async does not recognize initialPreview correctly for ajax response immediately sent with uploadUrl.
 - (bug #1457): Correct `removeFromPreviewOnError` validation.

js/fileinput.js

@@ -4751,6 +4751,7 @@
                             readFile(index + 1);
                         }, self.processDelay);
                     } else {
+                        self.unlock();
                         numFiles = 0;
                     }
                     if (!skipThumbEmbed) {