[Ada] Fix several typos

2018-05-30  Gary Dismukes  <dismukes@adacore.com>

gcc/ada/

	* sem_res.adb, sem_util.adb: Fix several typos.

From-SVN: r260939

gcc/ada/ChangeLog

+2018-05-30  Gary Dismukes  <dismukes@adacore.com>
+
+	* sem_res.adb, sem_util.adb: Fix several typos.
+
 2018-05-30  Olivier Hainque  <hainque@adacore.com>
 
 	* vx_crtbegin_attr.c (CTOR_ATTRIBUTE, DTOR_ATTRIBUTE): Empty.

gcc/ada/sem_res.adb

@@ -10120,10 +10120,10 @@ package body Sem_Res is
 
          --  The type of the context and that of the component are
          --  compatible and in general identical, but if they are anonymous
-         --  access_to_subprogram types the relevwnt type is that of the
-         --  component. Thid matters in Unnest_Subprograms mode, where the
-         --  relevant context is the one in which the type is declared. not
-         --  the point of use. this determines what activation record to use.
+         --  access-to-subprogram types, the relevant type is that of the
+         --  component. This matters in Unnest_Subprograms mode, where the
+         --  relevant context is the one in which the type is declared, not
+         --  the point of use. This determines what activation record to use.
 
          if Ekind (Typ) = E_Anonymous_Access_Subprogram_Type then
             Set_Etype (N, Etype (Comp1));

gcc/ada/sem_util.adb

@@ -13162,7 +13162,7 @@ package body Sem_Util is
       --  components.
 
       function Is_Atomic_Prefix (Pref : Node_Id) return Boolean;
-      --  Determine whether prefix Pref of a indexed or selected component is
+      --  Determine whether prefix Pref of an indexed or selected component is
       --  an atomic object.
 
       ----------------------