Enable Last Kmsg, also fix the GZipSection test.

Bug: 73354384, 76208934
Test: atest incidentd_test and manual as well
Change-Id: I074027f4d972686ae3e9415b50e4d3967f6a2355
diff --git a/cmds/incidentd/src/Section.cpp b/cmds/incidentd/src/Section.cpp
index 3b57d34..d964651 100644
--- a/cmds/incidentd/src/Section.cpp
+++ b/cmds/incidentd/src/Section.cpp
@@ -319,8 +319,10 @@
         index++;  // look at the next file.
     }
     VLOG("GZipSection is using file %s, fd=%d", mFilenames[index], fd.get());
-    if (fd.get() == -1) return -1;
-
+    if (fd.get() == -1) {
+      ALOGW("GZipSection %s can't open all the files", this->name.string());
+      return NO_ERROR; // e.g. LAST_KMSG will reach here in user build.
+    }
     FdBuffer buffer;
     Fpipe p2cPipe;
     Fpipe c2pPipe;