charConv: tie the buffer size for iconv() to our PATH_MAX constant

Although most PATH_MAX is higher than the 1k buffer we set, some
implementations will set a 256 (or even 64) byte PATH_MAX, so
we should be prepared for that.

git-svn-id: https://svn.musicpd.org/mpd/trunk@7121 09075e82-0dd4-0310-85a5-a0d7c8717e4f

src/charConv.c

@@ -20,6 +20,7 @@
 #include "mpd_types.h"
 #include "utf8.h"
 #include "utils.h"
+#include "path.h"
 
 #include <stdlib.h>
 #include <errno.h>
@@ -40,7 +41,7 @@ static mpd_sint8 char_conv_use_iconv;
   -1 is to use utf8ToLatin1*/
 static mpd_sint8 char_conv_latin1ToUtf8;
 
-#define BUFFER_SIZE	1024
+#define BUFFER_SIZE	MPD_PATH_MAX
 
 static void closeCharSetConversion(void);