(svn r25910) -Fix: Guard against empty FlowStats in a few more places.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/station_cmd.cpp b/src/station_cmd.cpp
index 423907a8f..ca0c0be05 100644
--- a/src/station_cmd.cpp
+++ b/src/station_cmd.cpp
@@ -4228,6 +4228,7 @@ void FlowStat::ChangeShare(StationID st, int flow)
  */
 void FlowStat::RestrictShare(StationID st)
 {
+	assert(!this->shares.empty());
 	uint flow = 0;
 	uint last_share = 0;
 	SharesMap new_shares;
@@ -4248,6 +4249,7 @@ void FlowStat::RestrictShare(StationID st)
 	if (flow == 0) return;
 	new_shares[last_share + flow] = st;
 	this->shares.swap(new_shares);
+	assert(!this->shares.empty());
 }
 
 /**
@@ -4257,6 +4259,7 @@ void FlowStat::RestrictShare(StationID st)
  */
 void FlowStat::ReleaseShare(StationID st)
 {
+	assert(!this->shares.empty());
 	uint flow = 0;
 	uint next_share = 0;
 	bool found = false;
@@ -4283,6 +4286,7 @@ void FlowStat::ReleaseShare(StationID st)
 		}
 	}
 	this->shares.swap(new_shares);
+	assert(!this->shares.empty());
 }
 
 /**