Add missing switch case, fix clang-tidy checks

.clang-tidy

@@ -1,6 +1,6 @@
 ---
 Checks: >
-    *-,
+    -*,
     cppcoreguidelines-macro-usage,
     modernize-use-nullptr,
     modernize-use-override

src/openrct2/peep/GuestPathfinding.cpp

@@ -115,6 +115,8 @@ namespace OpenRCT2::PathFinding
                 return "LimitReached";
             case PathSearchResult::Other:
                 return "Other";
+            case PathSearchResult::Loop:
+                return "Loop";
             case PathSearchResult::Failed:
                 return "Failed";
                 // The default case is omitted intentionally.
@@ -1977,6 +1979,8 @@ namespace OpenRCT2::PathFinding
                     case PathSearchResult::Wide:
                         adjustedEdges &= ~(1 << chosenDirection);
                         break;
+                    default:
+                        break;
                 }
             }
             if (adjustedEdges != 0)