54104: fix bug with packing strings into wordcode

ChangeLog

@@ -1,5 +1,8 @@
 2025-11-24  Oliver Kiddle  <opk@zsh.org>
 
+	* 54104: Src/parse.c, Src/zsh.h: fix bug with packing strings
+	into wordcode
+
 	* 54103: Src/builtin.c, Src/parse.c, Test/C02cond.ztst:
 	support > and < comparisons via the test builtin
 

Src/parse.c

@@ -446,7 +446,9 @@ ecstrcode(char *s)
 	long cmp;
 
 	for (pp = &ecstrs; (p = *pp); ) {
-	    if (!(cmp = p->nfunc - ecnfunc) && !(cmp = (((long)p->hashval) - ((long)val))) && !(cmp = strcmp(p->str, s))) {
+	    if (!(cmp = p->nfunc - ecnfunc) &&
+		    !(cmp = (int) (p->hashval - val)) &&
+		    !(cmp = strcmp(p->str, s))) {
 		/* Re-use the existing string. */
 		return p->offs;
             }

Src/zsh.h

@@ -850,7 +850,7 @@ struct eccstr {
     int nfunc;
 
     /* Hash of str. */
-    int hashval;
+    unsigned hashval;
 };
 
 /*