Merge pull request libgit2#5240 from pks-t/pks/valgrind-suppress-gcrypt

valgrind: suppress memory leaks in libssh2_session_handshake

Author: pks-t

script/valgrind.supp

@@ -55,6 +55,15 @@
 	fun:curl_global_init
 }
 
+{
+	ignore-libssh2-init
+	Memcheck:Leak
+	...
+	fun:gcry_control
+	fun:libssh2_init
+	...
+}
+
 {
 	ignore-libssh2-gcrypt-control-leak
 	Memcheck:Leak
@@ -103,6 +112,17 @@
 	obj:*libssh2.so*
 }
 
+{
+	ignore-libssh2-gcrypt-session-handshake
+	Memcheck:Leak
+	...
+	obj:*libgcrypt.so*
+	obj:*libssh2.so*
+	obj:*libssh2.so*
+	fun:libssh2_session_handshake
+	...
+}
+
 {
 	ignore-noai6ai_cached-double-free
 	Memcheck:Free