Netfs: Fix wformat-security

Change-Id: Id24585b12a264deb7dc87deb87a523e507773096
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4483
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: Franck LeCodeur <[email protected]>
Reviewed-by: Adrien Destugues <[email protected]>

src/add-ons/kernel/file_systems/netfs/authentication_server/AuthenticationPanel.cpp

@@ -198,8 +198,8 @@ AuthenticationPanel::GetAuthentication(const char* server,
 	// window wants to quit
 	Lock();
 
-	sprintf(user, fNameTC->Text());
-	sprintf(pass, fPassTC->Text());
+	strcpy(user, fNameTC->Text());
+	strcpy(pass, fPassTC->Text());
 	*keep = fKeepUsingCB->Value() == B_CONTROL_ON;
 
 	Quit();

src/add-ons/kernel/file_systems/netfs/netfs_config/netfs_config.cpp

@@ -27,7 +27,7 @@ static
 void
 print_usage(bool error)
 {
-	fprintf((error ? stderr : stdout), kUsage);
+	fputs(kUsage, (error ? stderr : stdout));
 }
 
 // add_server

src/add-ons/kernel/file_systems/netfs/netfs_server_prefs/NetFSServerPrefs.cpp

@@ -53,7 +53,7 @@ static
 void
 print_usage(bool error)
 {
-	fprintf((error ? stderr : stdout), kUsage);
+	fputs(kUsage, (error ? stderr : stdout));
 }
 
 // print_usage_and_exit

src/add-ons/kernel/file_systems/netfs/server/NetFSServer.cpp

@@ -1367,7 +1367,7 @@ static
 void
 print_usage(bool error)
 {
-	fprintf((error ? stderr : stdout), kUsage);
+	fputs(kUsage, (error ? stderr : stdout));
 }
 
 // main