tests: strip o/s-dependent error messages from some http tests

tests/test-bad-pull

@@ -1,7 +1,7 b''
 #!/bin/sh
 
-hg clone http://localhost:$HGPORT/ copy
-echo $?
+{ hg clone http://localhost:$HGPORT/ copy 2>&1; echo $?; } | \
+	sed 's/error:.*/error:/'
 test -d copy || echo copy: No such file or directory
 
 cat > dumb.py <<EOF
@@ -23,8 +23,7 b' echo $! >> $DAEMON_PIDS'
 # give the server some time to start running
 sleep 1
 
-http_proxy= hg clone http://localhost:$HGPORT/foo copy2 2>&1 | \
+{ http_proxy= hg clone http://localhost:$HGPORT/foo copy2 2>&1; echo $?; } | \
     sed -e 's/404.*/404/' -e 's/Date:.*/Date:/'
-echo $?
 
 kill $!

tests/test-bad-pull.out

@@ -1,5 +1,5 b''
-abort: error: Connection refused
+abort: error:
 255
 copy: No such file or directory
 abort: HTTP Error 404
-0
+255

tests/test-http-proxy

@@ -36,7 +36,8 b' echo %% url with user name and password'
 http_proxy=http://user:passwd@localhost:$HGPORT1 hg clone --config http_proxy.always=True http://user:passwd@localhost:$HGPORT/ e
 
 echo %% bad host:port for proxy
-http_proxy=localhost:$HGPORT2 hg clone --config http_proxy.always=True http://localhost:$HGPORT/ f
+http_proxy=localhost:$HGPORT2 hg clone --config http_proxy.always=True http://localhost:$HGPORT/ f 2>&1 | \
+	sed 's/error:.*/error:/'
 
 echo %% do not use the proxy if it is in the no list
 http_proxy=localhost:$HGPORT1 hg clone --config http_proxy.no=localhost http://localhost:$HGPORT/ g

tests/test-http-proxy.out

@@ -48,7 +48,7 b' added 1 changesets with 1 changes to 1 f'
 updating working directory
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 %% bad host:port for proxy
-abort: error: Connection refused
+abort: error:
 %% do not use the proxy if it is in the no list
 requesting all changes
 adding changesets

tests/test-static-http

@@ -2,8 +2,8 b''
 
 cp "$TESTDIR"/printenv.py .
 
-http_proxy= hg clone http://localhost:$HGPORT/ copy
-echo $?
+{ http_proxy= hg clone http://localhost:$HGPORT/ copy 2>&1; echo $?; } | \
+	sed 's/error:.*/error:/'
 test -d copy || echo copy: No such file or directory
 
 # This server doesn't do range requests so it's basically only good for

tests/test-static-http.out

@@ -1,4 +1,4 b''
-abort: error: Connection refused
+abort: error:
 255
 copy: No such file or directory
 changeset:   0:53e17d176ae6