Fix

Author: AZero13

Tests/Foundation/Tests/TestProcess.swift

@@ -12,12 +12,7 @@ class TestProcess : XCTestCase {
     func test_exit0() throws {
         let process = Process()
         let executableURL = xdgTestHelperURL()
-        if #available(OSX 10.13, *) {
-            process.executableURL = executableURL
-        } else {
-            // Fallback on earlier versions
-            process.launchPath = executableURL.path
-        }
+        process.executableURL = executableURL
         XCTAssertEqual(process.launchPath, executableURL.path)
         process.arguments = ["--exit", "0"]
         try process.run()