binder: readCallingWorkSourceUid make const

Bug: N/A
Test: N/A
Change-Id: I09ec79695efc05ca88884f7c43a6a7ca7353dfda
Merged-In: I09ec79695efc05ca88884f7c43a6a7ca7353dfda
diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 8751ecb..ed6c834 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -541,7 +541,7 @@
     return err == NO_ERROR;
 }
 
-uid_t Parcel::readCallingWorkSourceUid()
+uid_t Parcel::readCallingWorkSourceUid() const
 {
     if (!mRequestHeaderPresent) {
         return IPCThreadState::kUnsetWorkSource;