dtinfo: Fix coverity warning related to using delete not delete []

cde/programs/dtinfo/DtMmdb/schema/container_desc.C

@@ -215,7 +215,7 @@ container_desc::init_index_array(object_dict& dict,
       index_array[pos] = tmp_index_array[ind];
    }
 
-   delete tmp_index_array;
+   delete [] tmp_index_array;
 }
 
 //////////////////////////////////////////////////////////////////////

cde/programs/dtinfo/DtMmdb/schema/object_dict.C

@@ -156,7 +156,7 @@ desc* object_dict::init_a_base(char* db_path, char* db_name)
    ////////////////
       x = parse(orig);
 
-      delete buf;
+      delete [] buf;
 
    }
 
@@ -268,7 +268,7 @@ desc* object_dict::init_a_base(char* define_desc_path, char* db_path,
 
    out.close();
 
-   delete schema_buf;
+   delete [] schema_buf;
 
 
    return x;

cde/programs/dtinfo/DtMmdb/schema/stored_object_desc.C

@@ -64,12 +64,12 @@ stored_object_desc::stored_object_desc(int class_code, const char* _type)
 
 stored_object_desc::~stored_object_desc() 
 { 
-   delete store_nm; 
+   free(store_nm); 
 }
 
 void stored_object_desc::set_store_nm(const char* str) 
 { 
-     delete store_nm;
+     free(store_nm);
      store_nm = strdup(str); 
 }