Environment: Use std::function

Change-Id: Ifb2d3aa1459863d69a1e171eb5ff7d3b44b16377
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/libs/utils/environment.cpp

@@ -281,7 +281,7 @@ bool Environment::isSameExecutable(const QString &exe1, const QString &exe2) con
 
 FileName Environment::searchInPath(const QString &executable,
                                    const QStringList &additionalDirs,
-                                   bool (*func)(const QString &name)) const
+                                   const PathFilter &func) const
 {
     if (executable.isEmpty())
         return FileName();