liblog: logcat -g readable size wrong

Bug: 28451229
Change-Id: I4bbc2bed933d69416c23cc7af617be3fb55d0b62
diff --git a/liblog/logd_reader.c b/liblog/logd_reader.c
index d844104..b894349 100644
--- a/liblog/logd_reader.c
+++ b/liblog/logd_reader.c
@@ -85,7 +85,7 @@
     .clear = logdClear,
     .getSize = logdGetSize,
     .setSize = logdSetSize,
-    .getReadableSize = logdGetSize,
+    .getReadableSize = logdGetReadableSize,
     .getPrune = logdGetPrune,
     .setPrune = logdSetPrune,
     .getStats = logdGetStats,