[commit] comment tweaks in dwarf2read.c

Hi.

fyi, I committed this.

2012-06-26  Doug Evans  <dje <at> google.com>

	* dwarf2read.c (lookup_dwo_comp_unit): Enhance comment.
	(lookup_dwo_type_unit): Ditto.

Index: dwarf2read.c
===================================================================
RCS file: /cvs/src/src/gdb/dwarf2read.c,v
retrieving revision 1.666
diff -u -p -r1.666 dwarf2read.c
--- dwarf2read.c	23 Jun 2012 22:23:46 -0000	1.666
+++ dwarf2read.c	26 Jun 2012 19:42:54 -0000
 <at>  <at>  -7216,7 +7216,7  <at>  <at>  lookup_dwo_file (char *dwo_name, const c
    If non-NULL, comp_dir is the DW_AT_comp_dir attribute.
    SIGNATURE is the "dwo_id" of the CU (for consistency we use the same
    nomenclature as TUs).
-   The result is the DWO CU or NULL if we didn't find it
+   The result is a pointer to the dwo_unit object or NULL if we didn't find it
    (dwo_id mismatch or couldn't find the DWO file).  */

 static struct dwo_unit *
 <at>  <at>  -7255,7 +7255,7  <at>  <at>  lookup_dwo_comp_unit (struct dwarf2_per_
 
 /* Lookup the DWO TU referenced from THIS_TU in DWO file DWO_NAME.
    If non-NULL, comp_dir is the DW_AT_comp_dir attribute.
-   The result is the DWO CU or NULL if we didn't find it