ProjectExplorer: Remove foreach / Q_FOREACH usage part 3

Task-number: QTCREATORBUG-27464
Change-Id: Iab4740dd2f475febf7532f0a02407b0088d54068
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/plugins/projectexplorer/toolchainsettingsaccessor.cpp

@@ -80,7 +80,7 @@ static Toolchains autoDetectToolChains(const ToolchainDetector &detector)
 static Toolchains makeUniqueByEqual(const Toolchains &a)
 {
     Toolchains result;
-    foreach (ToolChain *tc, a) {
+    for (ToolChain *tc : a) {
         if (!Utils::contains(result, [tc](ToolChain *rtc) { return *tc == *rtc; }))
             result.append(tc);
     }