refs #5333, make debug compilation fix for mysql 5.5 (MariaDB showed no issues)

git-svn-id: file:///svn/mysql/tokudb-engine/tokudb-engine@47605 c7de825b-a66e-492c-adef-691d508d4ae1

storage/tokudb/ha_tokudb_alter_56.cc

@@ -688,7 +688,8 @@ ha_tokudb::alter_table_expand_varchar_columns(TABLE *altered_table, Alter_inplac
             uint32_t offset_end = offset_start + share->kc_info.mcp_info[i].len_of_offsets;
 
             // make the expand varchar offsets message
-            DBT expand = {};
+            DBT expand;
+	    memset(&expand, 0, sizeof(expand));
             expand.size = sizeof (uchar) + sizeof offset_start + sizeof offset_end;
             expand.data = my_malloc(expand.size, MYF(MY_WME));
             if (!expand.data) {
@@ -845,7 +846,8 @@ ha_tokudb::alter_table_expand_one_column(TABLE *altered_table, Alter_inplace_inf
             uchar operation;
 
             // make the expand int field message
-            DBT expand = {};
+            DBT expand;
+	    memset(&expand, 0, sizeof(expand));
             expand.size = 1+4+4+4+4;
             switch (old_field_type) {
             case toku_type_int:

storage/tokudb/ha_tokudb_update_fun.cc

@@ -652,7 +652,8 @@ tokudb_expand_varchar_offsets(
     assert(offset_start < old_val->size);
     assert(offset_start + number_of_offsets < old_val->size);
 
-    DBT new_val = {};
+    DBT new_val;
+    memset(&new_val, 0, sizeof(new_val));
 
     if (old_val != NULL) {
         // compute the new val from the old val
@@ -759,7 +760,8 @@ tokudb_expand_field(
     assert(new_length >= old_length); // expand only
     assert(old_offset + old_length <= old_val->size); // old field within the old val
 
-    DBT new_val = {};
+    DBT new_val;
+    memset(&new_val, 0, sizeof(new_val));
 
     if (old_val != NULL) {
         // compute the new val from the old val