Support for 'Add Type Annotation' when selection if right after ';'.

pkg/analysis_server/lib/src/services/correction/assist_internal.dart

Index: pkg/analysis_server/lib/src/services/correction/assist_internal.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/assist_internal.dart b/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
index 381b7b7874808c568e7ed458a9901773737e8856..177461db6e30ba724b0a4f701653b4f0f375280f 100644
--- a/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
@@ -210,6 +210,11 @@ class AssistProcessor {
   }
 
   void _addProposal_addTypeAnnotation_VariableDeclaration() {
+    AstNode node = this.node;
+    // check if "var v = 42;^"
+    if (node is VariableDeclarationStatement) {
+      node = (node as VariableDeclarationStatement).variables;
+    }
     // prepare VariableDeclarationList
     VariableDeclarationList declarationList =
         node.getAncestor((node) => node is VariableDeclarationList);