From: Tony Cook <tony@develop-help.com>
Date: Tue, 23 Feb 2016 11:00:08 +0000 (+1100)
Subject: set pixels with no coverage to all zero
X-Git-Tag: v1.004_001~12
X-Git-Url: http://git.imager.perl.org/imager.git/commitdiff_plain/e329f022b2737e646bc73dc936a7277ddbd63b8c

set pixels with no coverage to all zero

valgrind complained about use of uninitialized values
---

diff --git a/rotate.im b/rotate.im
index 861810d4..250d778b 100644
--- a/rotate.im
+++ b/rotate.im
@@ -152,6 +152,10 @@ static i_color interp_i_color(i_color before, i_color after, double pos,
 	out.channel[ch] = I_LIMIT_8(out_level);
       }
     }
+    else {
+      for (ch = 0; ch < channels-1; ++ch)
+	out.channel[ch] = 0;
+    }
 
     out.channel[channels-1] = total_cover;
   }
@@ -188,6 +192,10 @@ static i_fcolor interp_i_fcolor(i_fcolor before, i_fcolor after, double pos,
 	out.channel[ch] = I_LIMIT_DOUBLE(out_level);
       }
     }
+    else {
+      for (ch = 0; ch < channels-1; ++ch)
+	out.channel[ch] = 0;
+    }
 
     out.channel[channels-1] = total_cover;
   }