[raster] MapAlgebra regression

[strk]

At r9061

 PostgreSQL 8.4.10 on x86_64-pc-linux-gnu, compiled by GCC gcc-4.4.real (Ubuntu 4.4.3-4ubuntu5) 4.4.3, 64-bit
 Postgis 2.0.0alpha4SVN - 2012-02-07 07:22:29
   GEOS: 3.3.2dev-CAPI-1.7.2
   PROJ: Rel. 4.7.1, 23 September 2009
   GDAL: GDAL 1.9.0, released 2011/12/29


 rt_mapalgebraexpr .. failed (diff expected obtained: /tmp/pgis_reg_8276/test_41_diff)
-----------------------------------------------------------------------------
--- rt_mapalgebraexpr_expected  2012-02-04 18:04:21.000000000 +0100
+++ /tmp/pgis_reg_8276/test_41_out      2012-02-07 08:26:16.000000000 +0100
@@ -8,9 +8,9 @@
 T4||2
 T5||2
 T6||-1
-T7|100|
+T7|100|15
 T8|100|120
-T9|101|
+T9|101|3
 T10.6.2|10|40
 T10.6.3|10|30
 T10.6.4|10|25
-----------------------------------------------------------------------------
 rt_mapalgebrafct .. failed (diff expected obtained: /tmp/pgis_reg_8276/test_42_diff)
-----------------------------------------------------------------------------
--- rt_mapalgebrafct_expected   2012-01-20 11:24:38.000000000 +0100
+++ /tmp/pgis_reg_8276/test_42_out      2012-02-07 08:26:16.000000000 +0100
@@ -114,9 +114,9 @@
 NOTICE:  Pixel value is null.
 |
 |19
-100|
+100|15
 100|120
-101|
+101|3
 213|213
 6314|6314
 100|
-----------------------------------------------------------------------------

[strk]

Another confirmation from Hudson: ​http://office.refractions.net:1500/job/PostGIS-trunk-regression/2140/artifact/results_8.4.5_3.3.2_4.7.0/regress-TRUNK_9059_8.4.5_3.3.2_4.7.0.log

[dzwarg]

Fixed in r9068.