Commit patch from Jacques Boscq, which will prohibit the calling of memcpy with src=dest

code/qcommon/files.c

@@ -1092,8 +1092,10 @@ int FS_FOpenFileRead( const char *filename, fileHandle_t *file, qboolean uniqueF
 					temp = zfi->file;
 					// set the file position in the zip file (also sets the current file info)
 					unzSetCurrentFileInfoPosition(pak->handle, pakFile->pos);
-					// copy the file info into the unzip structure
-					Com_Memcpy( zfi, pak->handle, sizeof(unz_s) );
+                                        if ( zfi != pak->handle ) {
+						// copy the file info into the unzip structure
+						Com_Memcpy( zfi, pak->handle, sizeof(unz_s) );
+                                        }
 					// we copy this back into the structure
 					zfi->file = temp;
 					// open the file in the zip