NFC: Directly initialize the 's' variable.

As part of enabling -Wconditional-uninitialized, there are some false
positives. See https://bugs.llvm.org/show_bug.cgi?id=38856 for more info
about the limited flow analysis. To facilitate turning this flag on more
widely, we can just directly initialize these variables.

Bug: http://b/131390872
Test: Builds with -Wconditional-uninitialized.
Change-Id: Id6633a06478dfb0c51a1a3b0cabf4c4e5d57abaa
diff --git a/cmds/bugreport/bugreport.cpp b/cmds/bugreport/bugreport.cpp
index 917c813..840ae47 100644
--- a/cmds/bugreport/bugreport.cpp
+++ b/cmds/bugreport/bugreport.cpp
@@ -37,7 +37,7 @@
   property_set("ctl.start", "dumpstate");
 
   // Socket will not be available until service starts.
-  int s;
+  int s = -1;
   for (int i = 0; i < 20; i++) {
     s = socket_local_client("dumpstate", ANDROID_SOCKET_NAMESPACE_RESERVED,
                             SOCK_STREAM);