Merge pull request #3574 from matt335672/deepin20_build_error

Fix compilation failure in Deepin 20 (glibc < 2.38)

sesman/ercp_process.c

@@ -35,6 +35,7 @@
 #include "ercp.h"
 #include "ercp_process.h"
 #include "session_list.h"
+#include "string_calls.h"
 
 /******************************************************************************/
 static int

sesman/sesexec/ercp_server.c

@@ -36,6 +36,7 @@
 #include "os_calls.h"
 #include "session.h"
 #include "sesman_config.h"
+#include "string_calls.h"
 #include "trans.h"
 
 #include "ercp.h"