VM: Re-format to use at most one newline between functions

runtime/vm/weak_code.cc

Index: runtime/vm/weak_code.cc
diff --git a/runtime/vm/weak_code.cc b/runtime/vm/weak_code.cc
index 7f2f4064ff37f551baba76af68badef9dae5b39a..c750d94155bcdb8fb309c6b91cdf5fc578dcc5db 100644
--- a/runtime/vm/weak_code.cc
+++ b/runtime/vm/weak_code.cc
@@ -17,7 +17,6 @@ bool WeakCodeReferences::HasCodes() const {
   return !array_.IsNull() && (array_.Length() > 0);
 }
 
-
 void WeakCodeReferences::Register(const Code& value) {
   if (!array_.IsNull()) {
     // Try to find and reuse cleared WeakProperty to avoid allocating new one.
@@ -43,7 +42,6 @@ void WeakCodeReferences::Register(const Code& value) {
   UpdateArrayTo(new_array);
 }
 
-
 bool WeakCodeReferences::IsOptimizedCode(const Array& dependent_code,
                                          const Code& code) {
   if (!code.is_optimized()) {
@@ -59,7 +57,6 @@ bool WeakCodeReferences::IsOptimizedCode(const Array& dependent_code,
   return false;
 }
 
-
 void WeakCodeReferences::DisableCode() {
   Thread* thread = Thread::Current();
   const Array& code_objects = Array::Handle(thread->zone(), array_.raw());