Don't capitalize error messages.

httpupload.go

@@ -136,7 +136,7 @@ func httpUpload(client *xmpp.Client, iqc chan xmpp.IQ,
 			if varAttr.Value == "max-file-size" && prevFieldVal.Text() == nsHTTPUpload {
 				maxFileSize, err = strconv.ParseInt(curFieldVal.Text(), 10, 64)
 				if err != nil {
-					log.Fatal("Error while checking server maximum http upload file size.")
+					log.Fatal("error while checking server maximum http upload file size.")
 				}
 			}
 		}
@@ -169,7 +169,7 @@ func httpUpload(client *xmpp.Client, iqc chan xmpp.IQ,
 		log.Fatal(err)
 	}
 	if uploadSlot.Type != "result" {
-		log.Fatal("Error while requesting upload slot.")
+		log.Fatal("error while requesting upload slot.")
 	}
 	iqHTTPUploadSlotXML := etree.NewDocument()
 	err = iqHTTPUploadSlotXML.ReadFromBytes(uploadSlot.Query)

ox.go

@@ -495,7 +495,7 @@ func oxRecvPublicKeys(client *xmpp.Client, iqc chan xmpp.IQ, recipient string,
 		return nil, err
 	}
 	if oxPublicKey.Type != "result" {
-		return nil, errors.New("Error while requesting public key for " +
+		return nil, errors.New("error while requesting public key for " +
 			recipient)
 	}
 	oxPublicKeyXML := etree.NewDocument()
@@ -569,7 +569,7 @@ func oxGetPublicKeyRing(client *xmpp.Client, iqc chan xmpp.IQ,
 		log.Fatal(err)
 	}
 	if oxPublicKeyList.Type != "result" {
-		return nil, errors.New("Error while requesting public openpgp keys for " +
+		return nil, errors.New("error while requesting public openpgp keys for " +
 			recipient)
 	}
 	oxPubKeyListXML := etree.NewDocument()