refactored PR for fixing mirror URLs

src/web/web.go

@@ -43,12 +43,18 @@ func SetMirrors(node_mirror string, npm_mirror string) {
 		if strings.ToLower(nodeBaseAddress[0:4]) != "http" {
 			nodeBaseAddress = "http://" + nodeBaseAddress
 		}
+		if !strings.HasSuffix(nodeBaseAddress, "/") {
+			nodeBaseAddress = nodeBaseAddress + "/"
+		}
 	}
 	if npm_mirror != "" && npm_mirror != "none" {
 		npmBaseAddress = npm_mirror
 		if strings.ToLower(npmBaseAddress[0:4]) != "http" {
 			npmBaseAddress = "http://" + npmBaseAddress
 		}
+		if !strings.HasSuffix(npmBaseAddress, "/") {
+			npmBaseAddress = npmBaseAddress + "/"
+		}
 	}
 }