Add -Wextra, remove warnings (#1)

Removed all -Wextra warnings in VM sources.
-Wno-unused-parameter has to be disabled due to lots of such warnings in
sdbusplus.

Tested:
Compilation generates no warnings

Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/state_machine.hpp b/src/state_machine.hpp
index 3e525cf..259802c 100644
--- a/src/state_machine.hpp
+++ b/src/state_machine.hpp
@@ -53,7 +53,7 @@ struct MountPointStateMachine : public interfaces::MountPointStateMachine
     {
         state = std::move(newState);
         LogMsg(Logger::Info, name, " state changed to ", state->getStateName());
-        if (newState = state->onEnter())
+        if ((newState = state->onEnter()))
         {
             changeState(std::move(newState));
         }