fix disposed semaphores

MareSynchronosServer/MareSynchronosStaticFilesServer/Controllers/ServerFilesController.cs

@@ -239,12 +239,22 @@ public class ServerFilesController : ControllerBase
             return BadRequest();
         }
         finally
+        {
+            try
             {
                 fileLock?.Release();
                 fileLock?.Dispose();
+            }
+            catch (ObjectDisposedException)
+            {
+                // it's disposed whatever
+            }
+            finally
+            {
                 _fileUploadLocks.TryRemove(hash, out _);
             }
         }
+    }
 
     [HttpPost(MareFiles.ServerFiles_UploadMunged + "/{hash}")]
     [RequestSizeLimit(200 * 1024 * 1024)]
@@ -326,12 +336,22 @@ public class ServerFilesController : ControllerBase
             return BadRequest();
         }
         finally
+        {
+            try
             {
                 fileLock?.Release();
                 fileLock?.Dispose();
+            }
+            catch (ObjectDisposedException)
+            {
+                // it's disposed whatever
+            }
+            finally
+            {
                 _fileUploadLocks.TryRemove(hash, out _);
             }
         }
+    }
 
     private static void MungeBuffer(Span<byte> buffer)
     {
@@ -421,10 +441,20 @@ public class ServerFilesController : ControllerBase
             return BadRequest();
         }
         finally
+        {
+            try
             {
                 fileLock?.Release();
                 fileLock?.Dispose();
+            }
+            catch (ObjectDisposedException)
+            {
+                // it's disposed whatever
+            }
+            finally
+            {
                 _fileUploadLocks.TryRemove(hash, out _);
             }
         }
     }
+}