Fix a crash when lyx2lyx failed to convert LyX file.

* src/buffer.C
	(Buffer::readFile): Only call updateDocLang if reading the file
	succeeded


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/branches/BRANCH_1_4_X@15093 a592a061-630c-0410-9148-cb99ea01b6c8

src/buffer.C

@@ -556,14 +556,15 @@ bool Buffer::readFile(string const & filename)
 	paragraphs().clear();
 	LyXLex lex(0, 0);
 	lex.setFile(filename);
-	bool ret = readFile(lex, filename);
+	if (!readFile(lex, filename))
+		return false;
 
 	// After we have read a file, we must ensure that the buffer
 	// language is set and used in the gui.
 	// If you know of a better place to put this, please tell me. (Lgb)
 	updateDocLang(params().language);
 
-	return ret;
+	return true;
 }
 
 

status.14x

@@ -47,6 +47,8 @@ What's new
 - Fix a crash when a used bibtex file is in a non-readable directory
   (bug 2782).
 
+- Fix a crash when lyx2lyx failed to convert LyX file.
+
 - Ignore the definition of LyXgreyout environment when re-importing a
   LyX-generated LaTeX file (part of bug 2420).