use the existing variable in error message

the error message was trying to use the variable/value which was not
there and which was the reason for the error message in the first place

Signed-off-by: Simon Effenberg <savar@schuldeigen.de>

pkg/cloud/azure/provider.go

@@ -208,7 +208,7 @@ func getRegions(service string, subscriptionsClient subscriptions.Client, provid
 						if loc, ok := allLocations[displName]; ok {
 							supLocations[loc] = displName
 						} else {
-							log.Warnf("unsupported cloud region %q", loc)
+							log.Warnf("unsupported cloud region %q", displName)
 						}
 					}
 					break
@@ -226,7 +226,7 @@ func getRegions(service string, subscriptionsClient subscriptions.Client, provid
 						if loc, ok := allLocations[displName]; ok {
 							supLocations[loc] = displName
 						} else {
-							log.Warnf("unsupported cloud region %q", loc)
+							log.Warnf("unsupported cloud region %q", displName)
 						}
 					}
 					break