fix compile error, when building with oqgraph

sql/field.h

@@ -63,6 +63,9 @@ enum Derivation
 #define my_charset_numeric      my_charset_latin1
 #define MY_REPERTOIRE_NUMERIC   MY_REPERTOIRE_ASCII
 
+/* The length of the header part for each virtual column in the .frm file */
+#define FRM_VCOL_HEADER_SIZE(b) (3 + test(b))
+
 struct ha_field_option_struct;
 
 struct st_cache_field;

sql/unireg.h

@@ -161,9 +161,6 @@ typedef struct st_ha_create_information HA_CREATE_INFO;
 
 #define DEFAULT_KEY_CACHE_NAME "default"
 
-/* The length of the header part for each virtual column in the .frm file */
-#define FRM_VCOL_HEADER_SIZE(b) (3 + test(b))
-
 
 /* Include prototypes for unireg */