[hackers] [blind] Fix blind-spiral-gradient || Mattias Andrée

[git]

commit 187994906ae77986072050ea2024fb531747fea5
Author:     Mattias Andrée <maand...@kth.se>
AuthorDate: Fri Jul 7 21:48:47 2017 +0200
Commit:     Mattias Andrée <maand...@kth.se>
CommitDate: Fri Jul 7 21:48:47 2017 +0200

    Fix blind-spiral-gradient
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

diff --git a/src/blind-spiral-gradient.c b/src/blind-spiral-gradient.c
index d405412..a248a02 100644
--- a/src/blind-spiral-gradient.c
+++ b/src/blind-spiral-gradient.c
@@ -146,7 +146,7 @@ main(int argc, char *argv[])
            stream.width * stream.height > 5)
                eprintf("<stdin>: each frame must contain exactly 2, 3, 4, or 5 
pixels\n");
 
-       with_params = (stream.width * stream.height) & 2;
+       with_params = (stream.width * stream.height) & 1;
        with_vector = stream.width * stream.height > 3;
 
        stream.width = width;