tdf#102872 TAB function is missing its argument

Commit 98f0e0eda5 introduced TAB function
but its declaration in basic/source/runtime/stdobj.cxx is missing its argument
So it used TAN function as argument

Change-Id: Id4461ca805f9c7034b0440de46b845f29f57e3b0
Reviewed-on: https://gerrit.libreoffice.org/29437
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

basic/source/runtime/stdobj.cxx

@@ -604,6 +604,7 @@ static Methods aMethods[] = {
   { "Expression",   SbxVARIANT, 0,nullptr,0 },
   { "Value",        SbxVARIANT, 0,nullptr,0 },
 { "Tab",            SbxSTRING,    1 | FUNCTION_, RTLNAME(Tab),0             },
+  { "Count",        SbxLONG, 0,nullptr,0 },
 { "Tan",            SbxDOUBLE,    1 | FUNCTION_, RTLNAME(Tan),0             },
   { "number",       SbxDOUBLE, 0,nullptr,0 },
 { "Time",           SbxVARIANT,       LFUNCTION_,RTLNAME(Time),0            },