Use limits.h to get the maximum length instead of hardcoding it.

Original patch by Sang-Uok Kum.

Signed-off-by: Tobias Diedrich <ranma@google.com>

Index: mplayer-patchset1/libmpdemux/mf.c
===================================================================
--- mplayer-patchset1.orig/libmpdemux/mf.c	2010-12-21 20:05:53.375548000 +0100
+++ mplayer-patchset1/libmpdemux/mf.c	2010-12-21 20:43:53.699417000 +0100
@@ -23,6 +23,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <limits.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 
@@ -63,8 +64,8 @@
    FILE *lst_f=fopen(filename + 1,"r");
    if ( lst_f )
     {
-     fname=malloc( 255 );
-     while ( fgets( fname,255,lst_f ) )
+     fname=malloc(PATH_MAX);
+     while ( fgets( fname,PATH_MAX,lst_f ) )
       {
        /* remove spaces from end of fname */
        char *t=fname + strlen( fname ) - 1;