_upgrade_dependencies: don't synthesise depspecs

_mport_open_with_archcheck needs to look for the actual depspec used,
so always pass that on. There doesn't seem to be any good reason to
pretend it was a port: depspec anyway.

src/macports1.0/macports.tcl

@@ -4724,14 +4724,11 @@ proc macports::_upgrade_dependencies {portinfoname depscachename variationslistn
  if {[info exists portinfo($dtype)]} {
  foreach i $portinfo($dtype) {
  set d [$parentworker eval "_get_dep_port $i"]
+ if {$d eq ""} {
+ set d [lindex [split $i :] end]
+ }
  if {![info exists depscache(port:$d)] && ![info exists depscache($i)]} {
- if {$d ne ""} {
- set dspec port:$d
- } else {
- set dspec $i
- set d [lindex [split $i :] end]
- }
- set status [macports::_upgrade $d $dspec $variationslist [array get options] depscache]
+ set status [macports::_upgrade $d $i $variationslist [array get options] depscache]
  if {$status != 0 && $status != 2 && ![ui_isset ports_processall]} break
  }
  }