Merge pull request #8740 from augusto2112/embed-func

[lldb] Use function in TestSwiftEmbeddedExpression so its not deleted

Author: adrian-prantl

lldb/test/API/lang/swift/embedded/expr/main.swift

@@ -1,7 +1,7 @@
-struct A {
+public struct A {
   var field = 4
 
-  func foo() -> Int {
+  public func foo() -> Int {
     return field * field
   }
 }