[Ada] Fix CodePeer warnings

[Pierre-Marie de Rodat via Gcc-patches]

This commit fixes warnings emitted by the CodePeer static analyzer.

Tested on x86_64-pc-linux-gnu, committed on trunk

gcc/ada/

        * sem_aggr.adb (Resolve_Iterated_Component_Association):
        Initialize Id_Typ to Any_Type by default.
diff --git a/gcc/ada/sem_aggr.adb b/gcc/ada/sem_aggr.adb
--- a/gcc/ada/sem_aggr.adb
+++ b/gcc/ada/sem_aggr.adb
@@ -1605,7 +1605,7 @@ package body Sem_Aggr is
          Loc : constant Source_Ptr := Sloc (N);
          Id  : constant Entity_Id  := Defining_Identifier (N);
 
-         Id_Typ : Entity_Id;
+         Id_Typ : Entity_Id := Any_Type;
 
          -----------------------
          -- Remove_References --