improve behavior of -F to decode even if there is no metadata

doc/html/changelog.html

@@ -66,6 +66,7 @@
 				General:
 				<ul>
 					<li>Large file (&gt;2GB) support everywhere</li>
+					<li>Better recovery for corrupted files</li>
 				</ul>
 			</li>
 			<li>
@@ -83,6 +84,7 @@
 			<li>
 				flac:
 				<ul>
+					<li>Improved the <a href="documentation.html#flac_options_decode_through_errors"><span class="argument">-F</span></a> to allow decoding of FLAC files whose metadata is corrupted.</li>
 					<li>Added a new option <a href="documentation.html#flac_options_tag_from_file"><span class="argument">--tag-from-file</span></a> for setting a tag from file (e.g. for importing a cuesheet as a tag).</li>
 					<li>Added support for encoding from non-compressed AIFF-C (<a href="https://sourceforge.net/tracker/?func=detail&amp;atid=113478&amp;aid=1090933&amp;group_id=13478">SF #1090933</a>).</li>
 					<li>Importing of non-CDDA-compliant cuesheets now only issues a warning, not an error (see <a href="http://www.hydrogenaudio.org/forums/index.php?showtopic=31282">here</a>).</li>