Ruby: improve return type

Author: aschackmull

ruby/ql/lib/codeql/ruby/ast/Control.qll

@@ -546,7 +546,7 @@ class CaseElseBranch extends AstNode instanceof CaseElseBranchImpl {
   final override string getAPrimaryQlClass() { result = "CaseElseBranch" }
 
   /** Gets the body of this else branch. */
-  final Stmt getBody() { result = super.getBody() }
+  final StmtSequence getBody() { result = super.getBody() }
 
   final override string toString() { result = "else ..." }
 

ruby/ql/lib/codeql/ruby/ast/internal/Control.qll

@@ -95,5 +95,5 @@ class InClauseSynth extends InClauseImpl, TInClauseSynth {
 class CaseElseBranchImpl extends AstNode, TCaseElseBranch {
   CaseElseBranchImpl() { this = TCaseElseBranchSynth(_, _) }
 
-  final Stmt getBody() { synthChild(this, 0, result) }
+  final StmtSequence getBody() { synthChild(this, 0, result) }
 }