macOS Build fix: TestURL

The catches _are_ exhaustive, and the cast to NSError will never fail, but since it is SwiftFoundation.NSError (and not ObjC NSError) the macOS build cannot detect that. Fix by catching all errors instead.

Author: millenomi

TestFoundation/TestURL.swift

@@ -244,29 +244,29 @@ class TestURL : XCTestCase {
 
         do {
           try FileManager.default.removeItem(atPath: gFileDoesNotExistPath)
-        } catch let error as NSError {
+        } catch {
           // The error code is a CocoaError
-          if error.code != CocoaError.fileNoSuchFile.rawValue {
+          if (error as? NSError)?.code != CocoaError.fileNoSuchFile.rawValue {
             return false
           }
         }
 
         do {
           try FileManager.default.createDirectory(atPath: gDirectoryExistsPath, withIntermediateDirectories: false)
-        } catch let error as NSError {
-          // The error code is a CocoaError
-          if error.code != CocoaError.fileWriteFileExists.rawValue {
-            return false
-          }
+        } catch {
+            // The error code is a CocoaError
+            if (error as? NSError)?.code != CocoaError.fileNoSuchFile.rawValue {
+                return false
+            }
         }
 
         do {
           try FileManager.default.removeItem(atPath: gDirectoryDoesNotExistPath)
-        } catch let error as NSError {
-          // The error code is a CocoaError
-          if error.code != CocoaError.fileNoSuchFile.rawValue {
-            return false
-          }
+        } catch {
+            // The error code is a CocoaError
+            if (error as? NSError)?.code != CocoaError.fileNoSuchFile.rawValue {
+                return false
+            }
         }
 
         #if os(Android)