add destructor for environment variables

Author: tomysshadow

FlashpointSecurePlayer/EnvironmentVariables.cs

@@ -22,6 +22,14 @@ public class EnvironmentVariables : Modifications {
 
         public EnvironmentVariables(EventHandler importStart, EventHandler importStop) : base(importStart, importStop) { }
 
+        ~EnvironmentVariables() {
+            try {
+                Deactivate();
+            } catch {
+                // fail silently
+            }
+        }
+
         private string GetComparableName(string name) {
             if (name == null) {
                 return name;

FlashpointSecurePlayer/Modifications.cs

@@ -21,10 +21,18 @@ public Modifications(EventHandler importStart, EventHandler importStop) {
 
         ~Modifications() {
             if (ImportStarted) {
-                StopImport();
+                try {
+                    StopImport();
+                } catch {
+                    // fail silently
+                }
             }
 
-            Deactivate();
+            try {
+                Deactivate();
+            } catch {
+                // fail silently
+            }
         }
 
         private void OnImportStart(EventArgs e) {