fix: optimize getting active launch config

Author: sigmaaa

bundles/com.espressif.idf.core/src/com/espressif/idf/core/build/IDFBuildConfiguration.java

@@ -147,11 +147,13 @@ public class IDFBuildConfiguration extends CBuildConfiguration
 	public boolean isProgressSet;
 	private QualifiedName TIMESTAMP_COMPILE_COMMANDS_PROPERTY = new QualifiedName(null,
 			"timestamp:compile_commands.json"); //$NON-NLS-1$
+	private ILaunchConfiguration configuration;
 
 	public IDFBuildConfiguration(IBuildConfiguration config, String name) throws CoreException
 	{
 		super(config, name);
 		buildConfiguration = config;
+		this.configuration = LAUNCH_CONFIG_PROVIDER.getActiveLaunchConfiguration();
 	}
 
 	public IDFBuildConfiguration(IBuildConfiguration config, String name, IToolChain toolChain)
@@ -164,6 +166,14 @@ public IDFBuildConfiguration(IBuildConfiguration config, String name, IToolChain
 	{
 		super(config, name, toolChain, launchMode);
 		this.toolChainFile = toolChainFile;
+		try
+		{
+			this.configuration = LAUNCH_CONFIG_PROVIDER.getActiveLaunchConfiguration();
+		}
+		catch (CoreException e)
+		{
+			Logger.log(e);
+		}
 	}
 
 	@Override
@@ -255,7 +265,6 @@ public String getProperty(String name)
 	{
 		try
 		{
-			ILaunchConfiguration configuration = LAUNCH_CONFIG_PROVIDER.getActiveLaunchConfiguration();
 			if (configuration != null
 					&& configuration.getType().getIdentifier().equals(IDFLaunchConstants.DEBUG_LAUNCH_CONFIG_TYPE))
 			{