check if we have required parameters for install-printerdriver (Fedora issue #1754204)

Author: zdohnal

NEWS

@@ -20,6 +20,7 @@
 - remove deprecated SIGNAL_RUN_LAST (pull/134)
 - use remote ppd for CUPS shared queues (pull/137)
 - get rid of warnings in applet (Fedora issue #1732890)
+- check if we have required parameters in install-printerdriver (Fedora issue #1754204)
 
 1.5.10 changes
 --------------

install-printerdriver.py

@@ -17,8 +17,18 @@ def progress(progress, type, user_data):
 
 set_debugging (True)
 
-package = sys.argv[1]
-repo = sys.argv[2]
+try:
+    package = sys.argv[1]
+except:
+    debugprint("Missing package name to install.")
+    sys.exit(1)
+
+try:
+    repo = sys.argv[2]
+except:
+    debugprint("Missing name of repo.")
+    sys.exit(1)
+
 try:
     repo_gpg_id = sys.argv[3]
 except: