A change to pm_message causes the output of this test to be a bit off.

--- a/test/pnmtojpeg-scans.ok
+++ a/test/pnmtojpeg-scans.ok
@@ -1,6 +1,5 @@
 success
-pnmtojpeg: Input file has format P6.
-It has 149 rows of 227 columns of pixels with max sample value of 255.
+pnmtojpeg: Input file has format P6.\nIt has 149 rows of 227 columns of pixels with max sample value of 255.
 pnmtojpeg: A scan script with 7 entries is being used:
 pnmtojpeg:     Scan  0: Ss= 0 Se= 0 Ah= 0 Al= 0  3 components
 pnmtojpeg:         Color component 0 index: 0