PATCH: Fix leak on print -zf/-sf error

[Mikael Magnusson <mikachu@xxxxxxxxx>]

for ((i=0; i < 1000000; i++ )); do print -zf hi%\*3\$; done
without the patch, this slowly grows in size, with the patch it doesn't.

---
 Src/builtin.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/Src/builtin.c b/Src/builtin.c
index e0f6a5c..eb63657 100644
--- a/Src/builtin.c
+++ b/Src/builtin.c
@@ -3731,7 +3731,7 @@ bin_print(char *name, char **args, Options ops, int func)
     int flen, width, prec, type, argc, n, narg, curlen = 0;
     int nnl = 0, fmttrunc = 0, ret = 0, maxarg = 0, nc = 0;
     int flags[5], *len;
-    char *start, *endptr, *c, *d, *flag, *buf, spec[13], *fmt = NULL;
+    char *start, *endptr, *c, *d, *flag, *buf = NULL, spec[13], *fmt = NULL;
     char **first, **argp, *curarg, *flagch = "0+- #", save = '\0', nullstr = '\0';
     size_t rcount, count = 0;
 #ifdef HAVE_OPEN_MEMSTREAM
@@ -4213,6 +4213,10 @@ bin_print(char *name, char **args, Options ops, int func)
 				 narg);
 			if (fout != stdout)
 			    fclose(fout);
+#ifdef HAVE_OPEN_MEMSTREAM
+			if (buf)
+			    free(buf);
+#endif
 			return 1;
 		    } else {
 		    	if (narg > maxarg) maxarg = narg;
@@ -4246,6 +4250,10 @@ bin_print(char *name, char **args, Options ops, int func)
 				     narg);
 			    if (fout != stdout)
 				fclose(fout);
+#ifdef HAVE_OPEN_MEMSTREAM
+			    if (buf)
+				free(buf);
+#endif
 			    return 1;
 			} else {
 		    	    if (narg > maxarg) maxarg = narg;
@@ -4275,6 +4283,10 @@ bin_print(char *name, char **args, Options ops, int func)
 					 narg);
 				if (fout != stdout)
 				    fclose(fout);
+#ifdef HAVE_OPEN_MEMSTREAM
+				if (buf)
+				    free(buf);
+#endif
 				return 1;
 			    } else {
 		    		if (narg > maxarg) maxarg = narg;
@@ -4430,6 +4442,10 @@ bin_print(char *name, char **args, Options ops, int func)
 		    (fflush(fout) != 0 && errno != EBADF)) {
 		    zwarnnam(name, "write error: %e", errno);
 		}
+#ifdef HAVE_OPEN_MEMSTREAM
+		if (buf)
+		    free(buf);
+#endif
 		return 1;
 	    }
 
-- 
2.2.0.GIT