Fixes Solenoid Memory Leak

HAL ports can be freed after solenoid port is created

Author: ThadHouse

WPILib/DoubleSolenoid.cs

@@ -58,11 +58,11 @@ private void InitSolenoid()
                 IntPtr port = GetPortWithModule((byte)ModuleNumber, (byte)m_forwardChannel);
                 m_forwardSolenoid = InitializeSolenoidPort(port, ref status);
                 CheckStatus(status);
-
+                FreePort(port);
                 port = GetPortWithModule((byte)ModuleNumber, (byte)m_reverseChannel);
                 m_reverseSolenoid = InitializeSolenoidPort(port, ref status);
                 CheckStatus(status);
-
+                FreePort(port);
                 HAL.Base.HAL.Report(ResourceType.kResourceType_Solenoid, (byte)m_forwardChannel, (byte)(ModuleNumber));
                 HAL.Base.HAL.Report(ResourceType.kResourceType_Solenoid, (byte)m_reverseChannel, (byte)(ModuleNumber));
                 LiveWindow.LiveWindow.AddActuator("DoubleSolenoid", ModuleNumber, m_forwardChannel, this);

WPILib/Solenoid.cs

@@ -40,6 +40,7 @@ private void InitSolenoid()
                 IntPtr port = GetPortWithModule((byte)ModuleNumber, (byte)m_channel);
                 m_solenoidPort = InitializeSolenoidPort(port, ref status);
                 CheckStatus(status);
+                FreePort(port);
                 LiveWindow.LiveWindow.AddActuator("Solenoid", ModuleNumber, m_channel, this);
                 Report(ResourceType.kResourceType_Solenoid, (byte)m_channel, (byte)ModuleNumber);
             }

WPILib/SolenoidBase.cs

@@ -33,8 +33,10 @@ protected SolenoidBase(int moduleNumber)
             {
                 ModuleNumber = moduleNumber;
                 int status = 0;
-                m_port = InitializeSolenoidPort(GetPortWithModule((byte) ModuleNumber, 0), ref status);
+                IntPtr port = GetPortWithModule((byte)ModuleNumber, 0);
+                m_port = InitializeSolenoidPort(port, ref status);
                 CheckStatus(status);
+                FreePort(port);
             }
         }