update pink and delete some compile warning

.travis.yml

@@ -7,7 +7,7 @@ os:
 
 addons:
   apt:
-    packages: ['zlib1g-dev', 'libbz2-dev', 'libsnappy-dev', 'curl', 'libprotobuf-dev', 'protobuf-compiler', 'libevent-devel']
+    packages: ['zlib1g-dev', 'libbz2-dev', 'libsnappy-dev', 'curl', 'libprotobuf-dev', 'protobuf-compiler']
 
 compiler:
   - gcc

src/pika.cc

@@ -138,7 +138,7 @@ int main(int argc, char *argv[]) {
   rlimit limit;
   if (getrlimit(RLIMIT_NOFILE,&limit) == -1) {
     LOG(WARNING) << "getrlimit error: " << strerror(errno);
-  } else if (limit.rlim_cur < g_pika_conf->maxclients() + PIKA_MIN_RESERVED_FDS) {
+  } else if (limit.rlim_cur < static_cast<unsigned int>(g_pika_conf->maxclients() + PIKA_MIN_RESERVED_FDS)) {
     rlim_t old_limit = limit.rlim_cur;
     rlim_t best_limit = g_pika_conf->maxclients() + PIKA_MIN_RESERVED_FDS;
     limit.rlim_cur = best_limit > limit.rlim_max ? limit.rlim_max-1 : best_limit;

src/pika_binlog_bgworker.cc

@@ -29,7 +29,7 @@ void BinlogBGWorker::DoBinlogBG(void* arg) {
     LOG(WARNING) << "Fail to initial command from binlog: " << opt;
   }
 
-  uint64_t start_us;
+  uint64_t start_us = 0;
   if (g_pika_conf->slowlog_slower_than() >= 0) {
     start_us = slash::NowMicros();
   }

src/pika_client_conn.cc

@@ -45,7 +45,7 @@ std::string PikaClientConn::DoCmd(const std::string& opt) {
     return "-ERR NOAUTH Authentication required.\r\n";
   }
 
-  uint64_t start_us;
+  uint64_t start_us = 0;
   if (g_pika_conf->slowlog_slower_than() >= 0) {
     start_us = slash::NowMicros();
   }