Added a workaround for GLOB_BRACE flag not being available on some non GNU systems

Author: maxguru

pdf-forms-for-wpforms.php

@@ -744,7 +744,8 @@ public function remove_tmp_dir()
 				return;
 
 			// remove files in the directory
-			$files = glob( trailingslashit( $this->tmp_dir ) . '{,.}*', GLOB_BRACE );
+			$tmp_dir_slash = trailingslashit( $this->tmp_dir );
+			$files = array_merge( glob( $tmp_dir_slash . '*' ), glob( $tmp_dir_slash . '.*' ) );
 			while( $file = array_shift( $files ) )
 				if( is_file( $file ) )
 					@unlink( $file );