all: use "reports whether" consistently instead of "returns whether"

Follow-up for CL 147037 and after Brad noticed the "returns whether"
pattern during the review of CL 150621.

Go documentation style for boolean funcs is to say:

    // Foo reports whether ...
    func Foo() bool

(rather than "returns whether")

Created with:

    $ perl -i -npe 's/returns whether/reports whether/' $(git grep -l "returns whether" | grep -v vendor)

Change-Id: I15fe9ff99180ad97750cd05a10eceafdb12dc0b4
Reviewed-on: https://go-review.googlesource.com/c/150918
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/runtime/traceback.go b/src/runtime/traceback.go
index 9d2f7f037c..0328fee4e6 100644
--- a/src/runtime/traceback.go
+++ b/src/runtime/traceback.go
@@ -876,7 +876,7 @@ func isExportedRuntime(name string) bool {
 	return len(name) > n && name[:n] == "runtime." && 'A' <= name[n] && name[n] <= 'Z'
 }
 
-// elideWrapperCalling returns whether a wrapper function that called
+// elideWrapperCalling reports whether a wrapper function that called
 // function "name" should be elided from stack traces.
 func elideWrapperCalling(name string) bool {
 	// If the wrapper called a panic function instead of the