Update sync profiling changes for Solaris platform.

src/platform-solaris.cc

Index: src/platform-solaris.cc
diff --git a/src/platform-solaris.cc b/src/platform-solaris.cc
index 6d97ed7e3ef091a355c171432134ed4cdfdf9f7d..a4794a7672a5cab3baa1cda1346db8746f43a0eb 100644
--- a/src/platform-solaris.cc
+++ b/src/platform-solaris.cc
@@ -598,7 +598,10 @@ class Sampler::PlatformData : public Malloced {
 
 
 Sampler::Sampler(int interval, bool profiling)
-    : interval_(interval), profiling_(profiling), active_(false) {
+    : interval_(interval),
+      profiling_(profiling),
+      synchronous_(profiling),
+      active_(false) {
   data_ = new PlatformData();
 }