test363: make even smaller writes to loop more

tests/data/test363

@@ -55,9 +55,9 @@ CONNECT with short sends
  </name>
 <setenv>
 # make the first send cut off after this amount of data
-CURL_SMALLREQSEND=48
+CURL_SMALLREQSEND=8
 # make repeated sends small too
-CURL_SMALLSENDS=40
+CURL_SMALLSENDS=8
 </setenv>
  <command>
 http://test.%TESTNUMBER:%HTTPPORT/we/want/that/page/%TESTNUMBER -p -x %HOSTIP:%PROXYPORT -d "datatopost=ohthatsfunyesyes"