Fix some bugs in CheckMicrodumpContents

The crash address from the microdump was never checked against
anything. Instead, the test was checking the value of a constant.

On 32-bit systems, an intptr_t cannot represent kCrashAddress
(0xDEADDEAD), causing a failure when the crash address is parsed
from the microdump. Instead, use uintptr_t, which matches the type
of kCrashAddress.

Change-Id: Ib5612743803609f7801dcfb98deaa8779e362025
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2100816
Reviewed-by: Mike Frysinger <vapier@chromium.org>

src/client/linux/microdump_writer/microdump_writer_unittest.cc

diff --git a/src/client/linux/microdump_writer/microdump_writer_unittest.cc b/src/client/linux/microdump_writer/microdump_writer_unittest.cc
index c2fea02..ca26fbf 100644
--- a/src/client/linux/microdump_writer/microdump_writer_unittest.cc
+++ b/src/client/linux/microdump_writer/microdump_writer_unittest.cc
@@ -209,14 +209,14 @@
       string token;
       unsigned crash_reason;
       string crash_reason_str;
-      intptr_t crash_address;
+      uintptr_t crash_address;
       crash_reason_tokens.ignore(2); // Ignore the "R " preamble.
       crash_reason_tokens >> std::hex >> crash_reason >> crash_reason_str >>
           crash_address;
       ASSERT_FALSE(crash_reason_tokens.fail());
       ASSERT_EQ(MD_EXCEPTION_CODE_LIN_DUMP_REQUESTED, crash_reason);
       ASSERT_EQ("DUMP_REQUESTED", crash_reason_str);
-      ASSERT_EQ(0xDEADDEADu, kCrashAddress);
+      ASSERT_EQ(kCrashAddress, crash_address);
       did_find_crash_reason = true;
     } else if (line.find("V ") == 0) {
       if (expected_info.product_info)