console/cmd/play-level: fix duplicate error message

Issuing `/level non-existing-string` (not a number) resulted in two
messages: one about invalid level, and the other about invalid command
invocation.

docs/tr1/CHANGELOG.md

@@ -47,6 +47,7 @@
 - fixed the controls menu extending to the bottom of the screen with certain text scaling values (#1783, regression from 2.12)
 - fixed game stuck at remapping controller key if no controllers connected (#1788)
 - fixed being able to shoot the scion multiple times if save/load is used while it blows up (#1819)
+- fixed certain erroneous `/play` invocations resulting in duplicated error messages
 - improved enemy item drops by supporting the TR2+ approach of having drops defined in level data (#1713)
 - improved Italian localization for the Config Tool
 - improved the injection approach for Lara's responsive jumping (#1823)

docs/tr2/CHANGELOG.md

@@ -65,6 +65,7 @@
 - fixed sound settings resuming the music (#1707)
 - fixed the inventory ring spinout animation sometimes running too fast (#1704, regression from 0.3)
 - fixed new saves not displaying the save count in the passport (#1591)
+- fixed certain erroneous `/play` invocations resulting in duplicated error messages
 
 ## [0.5](https://github.com/LostArtefacts/TRX/compare/afaf12a...tr2-0.5) - 2024-10-08
 - added `/sfx` command

src/libtrx/game/console/cmd/play_level.c

@@ -46,7 +46,7 @@ static COMMAND_RESULT M_Entrypoint(const COMMAND_CONTEXT *const ctx)
 
     if (matches->count == 0) {
         Console_Log(GS(OSD_INVALID_LEVEL));
-        result = CR_BAD_INVOCATION;
+        result = CR_FAILURE;
         goto cleanup;
     } else if (matches->count >= 1) {
         const STRING_FUZZY_MATCH *const match = Vector_Get(matches, 0);