remove duplicate err!=nil check

main.go

@@ -1008,11 +1008,8 @@ func (tf *transformer) transformLinkname(localName, newName string) (string, str
 				newName, pkgPath)
 			return localName, newName
 		}
-		if err != nil {
 		panic(err) // shouldn't happen
 	}
-		return localName, newName
-	}
 	if lpkg.ToObfuscate {
 		// The name exists and was obfuscated; obfuscate the new name.
 		newForeignName := hashWithPackage(lpkg, foreignName)