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

valgrind: suppress memory leaks in libssh2_session_handshake

script/valgrind.supp

@@ -56,6 +56,15 @@
 }
 
 {
+	ignore-libssh2-init
+	Memcheck:Leak
+	...
+	fun:gcry_control
+	fun:libssh2_init
+	...
+}
+
+{
 	ignore-libssh2-gcrypt-control-leak
 	Memcheck:Leak
 	...
@@ -104,6 +113,17 @@
 }
 
 {
+	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
 	fun:free