[gcc/devel/ranger] Reword a comment in varpool_node::ctor_useable_for_folding_p.

[Aldy Hernandez]

https://gcc.gnu.org/g:5a715667bbb9b9e8a831c6ff2094ed8d2765d7db

commit 5a715667bbb9b9e8a831c6ff2094ed8d2765d7db
Author: Gerald Pfeifer <gerald@pfeifer.com>
Date:   Sat Jan 18 13:49:05 2020 +0100

    Reword a comment in varpool_node::ctor_useable_for_folding_p.
    
            * varpool.c (ctor_useable_for_folding_p): Fix grammar.

Diff:
---
 gcc/ChangeLog | 4 ++++
 gcc/varpool.c | 7 ++++---
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 064bb38a674..6f05cdbbba4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2019-01-18  Gerald Pfeifer  <gerald@pfeifer.com>
+
+	* varpool.c (ctor_useable_for_folding_p): Fix grammar.
+
 2020-01-18  Iain Sandoe  <iain@sandoe.co.uk>
 
 	* Makefile.in: Add coroutine-passes.o.
diff --git a/gcc/varpool.c b/gcc/varpool.c
index e5d632e0eb5..458cdf1bf37 100644
--- a/gcc/varpool.c
+++ b/gcc/varpool.c
@@ -352,9 +352,10 @@ varpool_node::ctor_useable_for_folding_p (void)
       return DECL_INITIAL (real_node->decl) != NULL;
     }
 
-  /* Alias of readonly variable is also readonly, since the variable is stored
-     in readonly memory.  We also accept readonly aliases of non-readonly
-     locations assuming that user knows what he is asking for.  */
+  /* An alias of a read-only variable is also read-only, since the variable
+     is stored in read-only memory.  We also accept read-only aliases of
+     non-read-only locations assuming that the user knows what he is asking
+     for.  */
   if (!TREE_READONLY (decl) && !TREE_READONLY (real_node->decl))
     return false;