Prevent a leak of iconv_t

Resolves: RHEL-44911

mtools-4.0.43-iconv_close.patch

@@ -0,0 +1,19 @@
+diff -ur mtools-4.0.44/charsetConv.c mtools-4.0.44-memleaks/charsetConv.c
+--- mtools-4.0.44/charsetConv.c	2022-09-24 10:43:03.000000000 +0200
++++ mtools-4.0.44-memleaks/charsetConv.c	2024-08-20 18:05:05.252088712 +0200
+@@ -70,6 +70,7 @@
+ 	res = iconv(test,
+ 		    &inbuf, &inbufLen,
+ 		    &outbufP, &outbufLen);
++	iconv_close(test);
+ 	if(res != 0 || outbufLen != 0 || inbufLen != 0)
+ 		goto fail;
+ 	if(memcmp(outbuf, "ab", 2))
+@@ -77,7 +78,6 @@
+ 	/* fprintf(stderr, "%s ok\n", testCp); */
+ 	return 1;
+  fail:
+-	iconv_close(test);
+  fail0:
+ 	/*fprintf(stderr, "%s fail\n", testCp);*/
+ 	return 0;

mtools.spec

@@ -7,6 +7,7 @@ Source0: ftp://ftp.gnu.org/gnu/mtools/mtools-%{version}.tar.gz
 Url: https://www.gnu.org/software/mtools/
 Patch0: mtools-3.9.6-config.patch
 Patch1: mtools-4.0.43-errmsgsize.patch
+Patch2: mtools-4.0.43-iconv_close.patch
 
 BuildRequires: make
 BuildRequires: gcc
@@ -33,6 +34,7 @@ Mtools should be installed if you need to use MS-DOS disks
 %setup -q -n %{name}-%{version}
 %patch 0 -p1 -b .conf
 %patch 1 -p1
+%patch 2 -p1
 
 %build
 autoreconf -fiv