Merge pull request #129 from zipofar/patch-1

Fix potential endless loop in prompt()

Author: schlessera

lib/cli/Streams.php

@@ -165,7 +165,7 @@ public static function prompt( $question, $default = null, $marker = ': ', $hide
 			self::out( $question . $marker );
 			$line = self::input( null, $hide );
 
-			if( !empty( $line ) )
+			if ( trim( $line ) !== '' )
 				return $line;
 			if( $default !== false )
 				return $default;