fixup! xdiff: make fields of xrecord_t Rust friendly

To make `xdl_classify_record()` work, the `ha` attributes of `xrecord_t`
and of `s_xdlclass` _must_ have the same range. Otherwise the function
won't be able to recognize previously-classified records correctly when
the `ha` recorded in the `xrecord_t` is so wide that it won't fit into
the `s_xdlclass`' attribute and therefore they won't match when they
need to match.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

xdiff/xprepare.c

@@ -32,7 +32,7 @@
 
 typedef struct s_xdlclass {
 	struct s_xdlclass *next;
-	unsigned long ha;
+	u64 ha;
 	char const *line;
 	long size;
 	long idx;