Initialize input buffer structs properly

Source/UnrealFightingFramework/Input/FFInputBufferComponent.h

@@ -35,6 +35,14 @@ struct FFFInputState
 	UPROPERTY(EditAnywhere, Meta = (Bitmask))
 	int32		Buttons;
 	int32		DisabledButtons;
+
+	FFFInputState()
+	    : MoveAxes(FVector2D::ZeroVector)
+	    , LookAxes(FVector2D::ZeroVector)
+	    , Buttons(0)
+	    , DisabledButtons(0)
+	{
+	}
 };
 
 USTRUCT(BlueprintType)
@@ -49,6 +57,12 @@ struct FFFInputCondition
 	// The button state required for condition to be valid i.e. pressed or released
 	UPROPERTY(EditAnywhere)
 	EFFButtonState RequiredButtonState;
+
+	FFFInputCondition()
+        : RequiredButtons(0)
+        , RequiredButtonState(EFFButtonState::BTNS_Pressed)
+	{
+	}
 };
 
 USTRUCT(BlueprintType)
@@ -61,6 +75,11 @@ struct FFFInputSequence
 
 	UPROPERTY(EditAnywhere)
 	int32 MaxDuration;
+
+	FFFInputSequence()
+	    : MaxDuration(0)
+    {
+	}
 };
 
 UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) )