Fixed AStreamSeekBlock. When skipping data, the position may not be the

requested one. (Breaking at least mapped file input).

src/input/stream.c

@@ -995,19 +995,21 @@ static int AStreamSeekBlock( stream_t *s, int64_t i_pos )
     }
     else
     {
-        /* Read enough data */
-        while( p_sys->block.i_start + p_sys->block.i_size < i_pos )
+        do
         {
+            /* Read and skip enough data */
             if( AStreamRefillBlock( s ) )
                 return VLC_EGENERIC;
 
             while( p_sys->block.p_current &&
-                   p_sys->i_pos + p_sys->block.p_current->i_buffer < i_pos )
+                   p_sys->i_pos + p_sys->block.p_current->i_buffer - p_sys->block.i_offset < i_pos )
             {
-                p_sys->i_pos += p_sys->block.p_current->i_buffer;
+                p_sys->i_pos += p_sys->block.p_current->i_buffer - p_sys->block.i_offset;
                 p_sys->block.p_current = p_sys->block.p_current->p_next;
+                p_sys->block.i_offset = 0;
             }
         }
+        while( p_sys->block.i_start + p_sys->block.i_size < i_pos );
 
         p_sys->block.i_offset = i_pos - p_sys->i_pos;
         p_sys->i_pos = i_pos;