Fixed bug with a variable name error popping up unexpectedly when try…

…ing to insert a variable tag

(cherry picked from commit e127a6a)

build.gradle

@@ -3,7 +3,7 @@ plugins {
 }
 
 group 'com.synfron.reshaper.burp'
-version '1.8.0'
+version '1.8.1'
 
 targetCompatibility = '15'
 sourceCompatibility = '15'

src/main/java/synfron/reshaper/burp/ui/models/rules/wizard/vars/EventVariableTagWizardModel.java

@@ -31,6 +31,7 @@ public EventVariableTagWizardModel(List<VariableSourceEntry> entries) {
                 .distinct()
                 .sorted(String::compareToIgnoreCase)
                 .collect(Collectors.toList());
+        variableName = variableNames.stream().findFirst().orElse(null);
     }
 
     private void propertyChanged(String name, Object value) {

src/main/java/synfron/reshaper/burp/ui/models/rules/wizard/vars/GlobalVariableTagWizardModel.java

@@ -33,6 +33,7 @@ public GlobalVariableTagWizardModel(List<VariableSourceEntry> entries) {
                 .distinct()
                 .sorted(String::compareToIgnoreCase)
                 .collect(Collectors.toList());
+        variableName = variableNames.stream().findFirst().orElse(null);
     }
 
     private void propertyChanged(String name, Object value) {