cmd/pprof: update vendored github.com/google/pprof

Pull in the latest published version of github.com/google/pprof
as part of the continuous process of keeping Go's dependencies
up to date. Done with:

go get github.com/google/pprof
go mod tidy
go mod vendor

For #36905.

Change-Id: I2a48e912712bc916c9d749acb1550682f919477e
Reviewed-on: https://go-review.googlesource.com/c/go/+/519657
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/cmd/vendor/github.com/google/pprof/profile/encode.go b/src/cmd/vendor/github.com/google/pprof/profile/encode.go
index c8a1beb8a8..182c926b90 100644
--- a/src/cmd/vendor/github.com/google/pprof/profile/encode.go
+++ b/src/cmd/vendor/github.com/google/pprof/profile/encode.go
@@ -258,10 +258,10 @@ func (p *Profile) postDecode() error {
 		// If this a main linux kernel mapping with a relocation symbol suffix
 		// ("[kernel.kallsyms]_text"), extract said suffix.
 		// It is fairly hacky to handle at this level, but the alternatives appear even worse.
-		if strings.HasPrefix(m.File, "[kernel.kallsyms]") {
-			m.KernelRelocationSymbol = strings.ReplaceAll(m.File, "[kernel.kallsyms]", "")
+		const prefix = "[kernel.kallsyms]"
+		if strings.HasPrefix(m.File, prefix) {
+			m.KernelRelocationSymbol = m.File[len(prefix):]
 		}
-
 	}
 
 	functions := make(map[uint64]*Function, len(p.Function))