fix another side of SD-1846 - Changing debugger options during debug causes exception

src/AddIns/Debugger/Debugger.AddIn/Options/DebuggingOptions.cs

@@ -41,5 +41,26 @@ namespace ICSharpCode.SharpDevelop.Services
 		
 		// Properties for the DebuggeeExceptionForm
 		public FormWindowState DebuggeeExceptionWindowState { get; set; }
+		
+		/// <summary>
+		/// Used to update status of some debugger properties while debugger is running.
+		/// </summary>
+		internal static void ResetStatus(Action<Process> resetStatus)
+		{
+			Process proc = WindowsDebugger.CurrentProcess;
+			// debug session is running
+			if (proc != null) {
+				bool wasPausedNow = false;
+				// if it is not paused, break execution
+				if (!proc.IsPaused) {
+					proc.Break();
+					wasPausedNow = true;
+				}
+				resetStatus(proc);
+				// continue if it was not paused before
+				if (wasPausedNow)
+					proc.AsyncContinue();
+			}
+		}
 	}
 }

src/AddIns/Debugger/Debugger.AddIn/Options/DebuggingOptionsPanel.xaml.cs

@@ -50,19 +50,7 @@ namespace Debugger.AddIn.Options
 		public override bool SaveOptions()
 		{
 			bool result = base.SaveOptions();
-			Process proc = WindowsDebugger.CurrentProcess;
-			// debug session is running
-			if (proc != null) {
-				bool wasPausedNow = false;
-				// if it is not paused, break execution
-				if (!proc.IsPaused) {
-					proc.Break();
-					wasPausedNow = true;
-				}
-				proc.Debugger.ResetJustMyCodeStatus();
-				// continue if it was not paused before
-				if (wasPausedNow) proc.AsyncContinue();
-			}
+			DebuggingOptions.ResetStatus(proc => proc.Debugger.ResetJustMyCodeStatus());
 			return result;
 		}
 	}

src/AddIns/Debugger/Debugger.AddIn/Options/DebuggingSymbolsPanel.cs

@@ -30,11 +30,11 @@ namespace ICSharpCode.SharpDevelop.Gui.OptionPanels
 		public override bool StorePanelContents()
 		{
 			DebuggingOptions.Instance.SymbolsSearchPaths = pathList.GetList();
-			Process proc = WindowsDebugger.CurrentProcess;
-			if (proc != null) {
-				proc.Debugger.ReloadModuleSymbols();
-				proc.Debugger.ResetJustMyCodeStatus();
-			}
+			DebuggingOptions.ResetStatus(
+				proc => {
+					proc.Debugger.ReloadModuleSymbols();
+					proc.Debugger.ResetJustMyCodeStatus();
+				});
 			return true;
 		}
 	}