Fix misc-macro-parentheses warnings in liblog.

Bug: 28705665
Change-Id: Ib272a83cb93b09d986c19a40e23a2679b9e17558
diff --git a/liblog/config_read.h b/liblog/config_read.h
index 67f4c20..49a3b75 100644
--- a/liblog/config_read.h
+++ b/liblog/config_read.h
@@ -27,21 +27,21 @@
 extern LIBLOG_HIDDEN struct listnode __android_log_persist_read;
 
 #define read_transport_for_each(transp, transports)                         \
-    for (transp = node_to_item((transports)->next,                          \
+    for ((transp) = node_to_item((transports)->next,                        \
                                struct android_log_transport_read, node);    \
-         (transp != node_to_item(transports,                                \
+         ((transp) != node_to_item(transports,                              \
                                  struct android_log_transport_read, node)); \
-         transp = node_to_item(transp->node.next,                           \
+         (transp) = node_to_item((transp)->node.next,                       \
                                struct android_log_transport_read, node))    \
 
 #define read_transport_for_each_safe(transp, n, transports)                 \
-    for (transp = node_to_item((transports)->next,                          \
+    for ((transp) = node_to_item((transports)->next,                        \
                                struct android_log_transport_read, node),    \
-         n = transp->node.next;                                             \
-         (transp != node_to_item(transports,                                \
+         (n) = (transp)->node.next;                                         \
+         ((transp) != node_to_item(transports,                              \
                                  struct android_log_transport_read, node)); \
-         transp = node_to_item(n, struct android_log_transport_read, node), \
-         n = transp->node.next)
+         (transp) = node_to_item(n, struct android_log_transport_read, node), \
+         (n) = (transp)->node.next)
 
 LIBLOG_HIDDEN void __android_log_config_read();