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-rw-r--r--Src/Modules/zutil.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/Src/Modules/zutil.c b/Src/Modules/zutil.c
index 85ab4b394..3443f870d 100644
--- a/Src/Modules/zutil.c
+++ b/Src/Modules/zutil.c
@@ -132,6 +132,7 @@ setstypat(Style s, char *pat, Patprog prog, char **vals, int eval)
 		freearray(p->vals);
 	    if (p->eval)
 		freeeprog(p->eval);
+            freepatprog(p->prog);
 	    p->vals = zarrdup(vals);
 	    p->eval = eprog;