do not crash when zlib is missing, but instead do not use deflate/inflate

[xonotic/darkplaces.git] / cl_parse.c

diff --git a/cl_parse.c b/cl_parse.c
index bee2cb533c4d08efcbca02f4ce858b439c79dcb7..ce231f0d9ee8637236d5fe60dacf18c1aee811f1 100644 (file)
--- a/cl_parse.c
+++ b/cl_parse.c
@@ -1299,9 +1299,18 @@ void CL_StopDownload(int size, int crc)
                        size_t inflated_size;
                        out = FS_Inflate(cls.qw_downloadmemory, cls.qw_downloadmemorycursize, &inflated_size, tempmempool);
                        Mem_Free(cls.qw_downloadmemory);
-                       Con_Printf("Inflated download: new size: %u (%g%%)\n", (unsigned)inflated_size, 100.0 - 100.0*(cls.qw_downloadmemorycursize / (float)inflated_size));
-                       cls.qw_downloadmemory = out;
-                       cls.qw_downloadmemorycursize = inflated_size;
+                       if(out)
+                       {
+                               Con_Printf("Inflated download: new size: %u (%g%%)\n", (unsigned)inflated_size, 100.0 - 100.0*(cls.qw_downloadmemorycursize / (float)inflated_size));
+                               cls.qw_downloadmemory = out;
+                               cls.qw_downloadmemorycursize = inflated_size;
+                       }
+                       else
+                       {
+                               cls.qw_downloadmemory = NULL;
+                               cls.qw_downloadmemorycursize = 0;
+                               Con_Printf("Cannot inflate download, possibly corrupt or zlib not present\n");
+                       }
                }
 
                if(!cls.qw_downloadmemory)