Fixed cleanup crash when processing messages with whitespace only fullname

Resolves: rhbz#1978901

postfix-3.5.9-whitespace-name-fix.patch

@@ -0,0 +1,13 @@
+diff --git a/src/cleanup/cleanup_message.c b/src/cleanup/cleanup_message.c
+index 391c711..be5ce42 100644
+--- a/src/cleanup/cleanup_message.c
++++ b/src/cleanup/cleanup_message.c
+@@ -773,6 +773,8 @@ static void cleanup_header_done_callback(void *context)
+ 		    /* Normalize whitespace. */
+ 		    token = tok822_scan_limit(state->fullname, &dummy_token,
+ 					      var_token_limit);
++		    if (!token)
++				token = tok822_alloc(TOK822_QSTRING, state->fullname);
+ 		} else {
+ 		    token = tok822_alloc(TOK822_QSTRING, state->fullname);
+ 		}

postfix.spec

@@ -49,7 +49,7 @@
 Name: postfix
 Summary: Postfix Mail Transport Agent
 Version: 3.5.9
-Release: 13%{?dist}
+Release: 14%{?dist}
 Epoch: 2
 URL: http://www.postfix.org
 License: (IBM and GPLv2+) or (EPL-2.0 and GPLv2+)
@@ -98,6 +98,8 @@ Patch11: postfix-3.4.4-chroot-example-fix.patch
 # in RHEL-9 this feature was also backported to 2.33,
 # upstream uses conditional check for 2.34 API
 Patch12: postfix-3.5.9-glibc-234-build-fix.patch
+# rhbz#1978901, sent upstream
+Patch13: postfix-3.5.9-whitespace-name-fix.patch
 
 # Optional patches - set the appropriate environment variables to include
 #                    them when building the package/spec file
@@ -249,6 +251,7 @@ popd
 %endif
 %patch11 -p1 -b .chroot-example-fix
 %patch12 -p1 -b .glibc-234-build-fix
+%patch13 -p1 -b .whitespace-name-fix
 
 for f in README_FILES/TLS_{LEGACY_,}README TLS_ACKNOWLEDGEMENTS; do
 	iconv -f iso8859-1 -t utf8 -o ${f}{_,} &&
@@ -792,6 +795,10 @@ fi
 %endif
 
 %changelog
+* Thu Aug  5 2021 Jaroslav Škarvada <jskarvad@redhat.com> - 2:3.5.9-14
+- Fixed cleanup crash when processing messages with whitespace only fullname
+  Resolves: rhbz#1978901
+
 * Thu Aug  5 2021 Jaroslav Škarvada <jskarvad@redhat.com> - 2:3.5.9-13
 - Used upstream patch for fixing FTBFS with glibc-2.34
   Related: rhbz#1984045