[gtk+] broadway: Avoid compiler warnings

[Matthias Clasen <matthiasc src gnome org>]

commit 85a6cafd81f6a68f8594d7315c1341d9443ca358
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 13 17:47:56 2015 -0400

    broadway: Avoid compiler warnings
    
    clang doesn't like self-assignment.

 gdk/broadway/broadway-buffer.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk/broadway/broadway-buffer.c b/gdk/broadway/broadway-buffer.c
index f864f52..d77d1de 100644
--- a/gdk/broadway/broadway-buffer.c
+++ b/gdk/broadway/broadway-buffer.c
@@ -392,7 +392,7 @@ broadway_buffer_encode (BroadwayBuffer *buffer, BroadwayBuffer *prev, GString *d
       hash = 0;
       for (j = x0; j < MIN(x1, x0 + block_size); j++)
         hash = hash * prime + line[j];
-      for (j = j; j < x0 + block_size; j++)
+      for (; j < x0 + block_size; j++)
         hash = hash * prime;
 
       for (j = x0; j < x1; j++)
@@ -405,7 +405,7 @@ broadway_buffer_encode (BroadwayBuffer *buffer, BroadwayBuffer *prev, GString *d
         }
     }
   // Do the last rows if height < block_size
-  for (i = i; i < y0 + block_size; i++)
+  for (; i < y0 + block_size; i++)
     {
       for (j = x0; j < x1; j++)
         block_hashes[j] = block_hashes[j] * vprime;