Merge tag '2020.1.1' into develop

Finish 2020.1.1

communCOL3-TP1.c

@@ -231,7 +231,7 @@ void lireMessageCOL3(int sock, char * msgrecu) {
     if((nbrecu = recv(sock, temp, sizeof(temp), 0)) < 0) {
        if (!NCURSE) printf("%s","     --> socket[lireMessageCOL3] : reception message [NOK] \n");
     }
-    temp[nbrecu] = '\0';
+    temp[nbrecu<0 ? 0 : nbrecu] = '\0';
     strcpy(msgrecu,temp);
     if (!NCURSE) printf("%s %d %s %s %s ","     --> socket[lireMessageCOL3] : reception message [OK] : nbrecu = ",nbrecu," msg = {",msgrecu,"}\n");
 }