Add n_missing argument to casereader_create_filter_missing

Add a new argument to casereader_create_filter_missing, which,
if non-null, receives the number of cases filtered out by the
new reader.  Update all callers of this function.

diff --git a/src/data/casereader-filter.c b/src/data/casereader-filter.c
index 5c46ed50dba436d1584a320e134be8fefc5e5de0..fcd264e9dc35e08f8d7737b83973ca9c5d4f9e40 100644 (file)
--- a/src/data/casereader-filter.c
+++ b/src/data/casereader-filter.c
@@ -266,7 +266,7 @@ static bool casereader_filter_missing_destroy (void *);
    is destroyed.
 
    If N_MISSING is non-null, then after reading, it will be filled
    is destroyed.
 
    If N_MISSING is non-null, then after reading, it will be filled

-   with the total number of dropped cases.
+   with the totla number of dropped cases.

 
    After this function is called, READER must not ever again
    be referenced directly.  It will be destroyed automatically
 
    After this function is called, READER must not ever again
    be referenced directly.  It will be destroyed automatically


@@ -285,8 +285,7 @@ casereader_create_filter_missing (struct casereader *reader,
       cfm->var_cnt = var_cnt;
       cfm->class = class;
       cfm->n_missing = n_missing;
       cfm->var_cnt = var_cnt;
       cfm->class = class;
       cfm->n_missing = n_missing;

-      if (n_missing) 
-       *n_missing = 0;
+      if (n_missing) *n_missing = 0;

       return casereader_create_filter_func (reader,
                                             casereader_filter_missing_include,
                                             casereader_filter_missing_destroy,
       return casereader_create_filter_func (reader,
                                             casereader_filter_missing_include,
                                             casereader_filter_missing_destroy,