typo in comments

panda/src/pnmimagetypes/pnmFileTypeJPGReader.cxx

@@ -22,7 +22,7 @@
 
 //
 // The following bit of code, for setting up jpeg_istream_src(), was
-// lifted from jpeglib, and modified to work with istream istead of
+// lifted from jpeglib, and modified to work with istream instead of
 // stdio.
 //
 

panda/src/pnmimagetypes/pnmFileTypeJPGWriter.cxx

@@ -24,8 +24,8 @@
 
 
 //
-// The following bit of code, for setting up jpeg_istream_src(), was
-// lifted from jpeglib, and modified to work with istream istead of
+// The following bit of code, for setting up jpeg_ostream_src(), was
+// lifted from jpeglib, and modified to work with ostream instead of
 // stdio.
 //