Fixes some memory leaks in //runtime/bin

runtime/bin/crypto_android.cc

Index: runtime/bin/crypto_android.cc
diff --git a/runtime/bin/crypto_android.cc b/runtime/bin/crypto_android.cc
index 4b55b910146141e8ad1a9277c76909f9d7eada9e..be91d4ee9258a45c6b92eba40bd088d80d9d31e5 100644
--- a/runtime/bin/crypto_android.cc
+++ b/runtime/bin/crypto_android.cc
@@ -10,10 +10,8 @@
 
 #include "bin/fdutils.h"
 #include "bin/crypto.h"
-
 #include "platform/signal_blocker.h"
 
-
 namespace dart {
 namespace bin {
 
@@ -21,7 +19,9 @@ bool Crypto::GetRandomBytes(intptr_t count, uint8_t* buffer) {
   ThreadSignalBlocker signal_blocker(SIGPROF);
   intptr_t fd = TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER(
       open("/dev/urandom", O_RDONLY));
-  if (fd < 0) return false;
+  if (fd < 0) {
+    return false;
+  }
   intptr_t bytes_read = 0;
   do {
     int res = TEMP_FAILURE_RETRY_NO_SIGNAL_BLOCKER(