Bug 1596668, r=spohl

Differential Revision: https://phabricator.services.mozilla.com/D58206

--HG--
extra : moz-landing-system : lando

xpcom/io/nsLocalFileUnix.cpp

@@ -1526,7 +1526,10 @@ nsLocalFile::IsExecutable(bool* aResult) {
     // Search for any of the set of executable extensions.
     static const char* const executableExts[] = {
         "air",  // Adobe AIR installer
-        "jar"   // java application bundle
+#ifdef MOZ_WIDGET_COCOA
+        "fileloc",  // File location files can be used to point to other files.
+#endif
+        "jar"  // java application bundle
     };
     nsDependentSubstring ext = Substring(path, dotIdx + 1);
     for (auto executableExt : executableExts) {