Libs: Cleanup lambdas

Change-Id: I715a124dd73f23c735dde27d3205ac7613ae04c6
Reviewed-by: hjk <hjk@qt.io>

src/libs/utils/terminalhooks.cpp

@@ -42,7 +42,7 @@ public:
                                                          FilePath{}),
                                                      parameters.environment.value_or(Environment{}));
         };
-        auto createProcessInterface = []() { return new ExternalTerminalProcessImpl(); };
+        auto createProcessInterface = [] { return new ExternalTerminalProcessImpl; };
 
         addCallbackSet("External", {openTerminal, createProcessInterface});
     }