Fix incorrect buffer size with wide conversion

Fixes a bug which would cause keyboard interaction with the browser
source to fail.

Author: jp9000

deps/wide-string.cpp

@@ -33,7 +33,7 @@ wstring to_wide(const char *utf8)
 
 	wstring wide;
 	wide.resize(osize);
-	os_utf8_to_wcs(utf8, isize, &wide[0], osize);
+	os_utf8_to_wcs(utf8, isize, &wide[0], osize + 1);
 	return wide;
 }
 
@@ -49,6 +49,6 @@ wstring to_wide(const std::string &utf8)
 
 	wstring wide;
 	wide.resize(osize);
-	os_utf8_to_wcs(utf8.c_str(), utf8.size(), &wide[0], osize);
+	os_utf8_to_wcs(utf8.c_str(), utf8.size(), &wide[0], osize + 1);
 	return wide;
 }