net: gate the dropped-send line on the category of the send it drops

2661de1 said all the "sending: " emission sites agree on the category.
There is a fourth, and it did not: EndMessage()'s -dropmessagestest path
hardcoded "net", so under plain -debug a dropped tx announced its own drop
while the "sending: tx" it interrupts was gated off under "relay". The
knob is test-only, so nothing operational rode on it, but the claim was
false as written.

Derive it from SendLogCategory() like the other three. nPushPos may be -1
at this point, and GetMessageCommand() returns "" there, so the category
is "net" exactly as before when there is no message in progress.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/net.h b/src/net.h
index 1aee973..600922a 100644
--- a/src/net.h
+++ b/src/net.h
@@ -841,7 +841,11 @@ public:
         extern int nDropMessagesTest;
         if (nDropMessagesTest > 0 && GetRand(nDropMessagesTest) == 0)
         {
-            if (LogAcceptsCategory("net")) printf("dropmessages DROPPING SEND MESSAGE\n");
+            // Same category as the "sending: " this line interrupts, so a tx
+            // does not announce its own drop under "net" having been gated
+            // off under "relay". nPushPos can be -1 here, and then
+            // GetMessageCommand() returns "" and this is "net" as before.
+            if (LogAcceptsCategory(SendLogCategory())) printf("dropmessages DROPPING SEND MESSAGE\n");
             AbortMessage();
             return;
         }