[releng] minor correction to typo in variable name
diff --git a/production/build-functions.shsource b/production/build-functions.shsource
index 5979490..957dd2a 100755
--- a/production/build-functions.shsource
+++ b/production/build-functions.shsource
@@ -16,8 +16,8 @@
     if [[ $actual != $expected ]]
     then
         BUILD_FAILED="${buildDirectory}/buildFailed-program-error"
-        echo "PROGRAM ERROR: expected $expected arguments but was passed $actual." >${BUILD_FAILD}
-        echo "               Called from ${FUNCNAME[1]}, called from line number ${BASH_LINENO[1]} in ${BASH_SOURCE[2]}." >>${BUILD_FAILD}
+        echo "PROGRAM ERROR: expected $expected arguments but was passed $actual." >${BUILD_FAILED}
+        echo "               Called from ${FUNCNAME[1]}, called from line number ${BASH_LINENO[1]} in ${BASH_SOURCE[2]}." >>${BUILD_FAILED}
         return 1
     fi
 }