fix: adding fmtname to mp_getcols() macro

tests/crossplatform/mp_getcols.test.sas

@@ -4,6 +4,7 @@
 
   <h4> SAS Macros </h4>
   @li mp_getcols.sas
+  @li mp_assertcols.sas
   @li mp_assertcolvals.sas
   @li mp_assertdsobs.sas
 
@@ -30,4 +31,10 @@ run;
   checkvals=work.check.val,
   desc=All values have a match,
   test=ALLVALS
+)
+
+%mp_assertcols(work.info,
+  cols=name type length varnum format label ddtype fmtname,
+  test=ALL,
+  desc=check all columns exist
 )