cros_show_stacks: Let the shell resolve the paths

CL:2784304 moves them to /usr/local/bin

BUG=chromium:1019611
TEST=./cros_show_stacks --board=nocturne foo.dmp

Change-Id: Idd6b77ecf59b84e2729f0128df4bd8dbc3ff02bb
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/2784363
Tested-by: Ryo Hashimoto <hashimoto@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Ryo Hashimoto <hashimoto@chromium.org>
diff --git a/cros_show_stacks b/cros_show_stacks
index 0fc5fe6..3dfc8fa 100755
--- a/cros_show_stacks
+++ b/cros_show_stacks
@@ -13,8 +13,8 @@
 
 assert_inside_chroot
 
-MINIDUMP_DUMP=/usr/bin/minidump_dump
-MINIDUMP_STACKWALK=/usr/bin/minidump_stackwalk
+MINIDUMP_DUMP=minidump_dump
+MINIDUMP_STACKWALK=minidump_stackwalk
 USING_REMOTE=0
 
 DEFINE_string board "${DEFAULT_BOARD}" \