Fix a clang analyzer 14 warning about a possible NULL deref.

Signed-off-by: mengwenhua <mengwenhua@xfusion.com>

backport-0001-Fix-a-clang-analyzer-14-warning-about-a-possible-NUL.patch

@@ -0,0 +1,28 @@
+From ab5f76a52bade28a2c025bd52c7847f033ca82f3 Mon Sep 17 00:00:00 2001
+From: "Todd C. Miller" <Todd.Miller@sudo.ws>
+Date: Wed, 29 Jun 2022 11:18:16 -0600
+Subject: [PATCH] Fix a clang analyzer 14 warning about a possible NULL deref.
+
+[edmonds: Import commit from
+https://github.com/sudo-project/sudo/commit/bfc6249902d842626058e74074832930feaf2f80.patch.]
+---
+ protobuf-c/protobuf-c.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/protobuf-c/protobuf-c.c b/protobuf-c/protobuf-c.c
+index 448f3e8..ad3ab12 100644
+--- a/protobuf-c/protobuf-c.c
++++ b/protobuf-c/protobuf-c.c
+@@ -3231,6 +3231,9 @@ protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
+ 	/* allocate space for repeated fields, also check that all required fields have been set */
+ 	for (f = 0; f < desc->n_fields; f++) {
+ 		const ProtobufCFieldDescriptor *field = desc->fields + f;
++		if (field == NULL) {
++			continue;
++		}
+ 		if (field->label == PROTOBUF_C_LABEL_REPEATED) {
+ 			size_t siz =
+ 			    sizeof_elt_in_repeated_array(field->type);
+-- 
+2.37.3.windows.1
+

protobuf-c.spec

@@ -1,6 +1,6 @@
 Name:           protobuf-c
 Version:        1.4.0
-Release:        3
+Release:        4
 Summary:        This is protobuf-c, a C implementation of the Google Protocol Buffers data serialization format
 License:        BSD
 URL:            https://github.com/protobuf-c/protobuf-c
@@ -13,6 +13,7 @@ Obsoletes:      %{name}-compiler < %{version}-%{release}
 
 Patch6000:      backport-0001-Fix-issue-499-unsigned-integer-overflow.patch
 Patch6001:      backport-0002-Fix-regression-with-zero-length-messages-introduced-.patch
+Patch6002:      backport-0001-Fix-a-clang-analyzer-14-warning-about-a-possible-NUL.patch
 
 %description
 This is protobuf-c, a C implementation of the Google Protocol Buffers data serialization format.
@@ -53,6 +54,9 @@ make check
 %{_libdir}/{libprotobuf-c.so,pkgconfig/libprotobuf-c.pc}
 
 %changelog
+* Sat Jan 7 2023 mengwenhua <mengwenhua@xfusion.com> - 1.4.0-4
+- Fix a clang analyzer 14 warning about a possible NULL deref.
+
 * Sat Jan 7 2023 mengwenhua<mengwenhua@xfusion.com> - 1.4.0-3
 - Type:bugfix
 - CVE:NA