co_merege bugfix, conditional opsys didn't work

src/exe/co_merge/src/co_merge.c

@@ -132,7 +132,7 @@ int main(  int argc, char *argv[])
     while( dcli_read_line( line, sizeof(line), fp)) {
       dcli_trim( line, line);
       if ( strncmp( line, "#if" , 3) == 0) {
-        in_if = ! check_os( &line[5], dos);
+        in_if = ! check_os( &line[4], dos);
         continue;
       }
       else if ( in_if) {