storage/nfs: fix deadlock when connecting

The Connect method can be called between Schedule and lock. In that case, when
locked, the state is already set to CONNECTING of READY and the condition won't
be signaled anymore.

NEWS

@@ -3,6 +3,8 @@ ver 0.19.10 (not yet released)
   - smbclient: fix DFF playback
 * encoder
   - opus: fix bogus granulepos
+* neighbor
+  - nfs: fix deadlock when connecting
 
 ver 0.19.9 (2015/02/06)
 * decoder

src/storage/plugins/NfsStorage.cxx

@@ -177,6 +177,8 @@ private:
 				mutex.unlock();
 				DeferredMonitor::Schedule();
 				mutex.lock();
+				if (state == State::INITIAL)
+					cond.wait(mutex);
 				break;
 
 			case State::CONNECTING:
@@ -188,8 +190,6 @@ private:
 				error.Set(last_error);
 				return false;
 			}
-
-			cond.wait(mutex);
 		}
 	}