ntdll: Don't try to map the PE file past the size of the backing file.

dlls/ntdll/virtual.c

@@ -1588,6 +1588,7 @@ static NTSTATUS map_image( HANDLE hmapping, ACCESS_MASK access, int fd, int top_
         /* unaligned sections, this happens for native subsystem binaries */
         /* in that case Windows simply maps in the whole file */
 
+        total_size = min( total_size, ROUND_SIZE( 0, st.st_size ));
         if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
                                 removable ) != STATUS_SUCCESS) goto error;