Cancellation.doCancel() -> doCancelBlocking() to avoid accidental using as non-blocking

Author: denizzzka

src/dpq2/cancellation.d

@@ -83,7 +83,7 @@ class Cancellation
      was already done processing the command), then there will be no
      visible result at all.
     */
-    void doCancel()
+    void doCancelBlocking()
     {
         auto res = PQcancelBlocking(cancelConn);
 

src/dpq2/connection.d

@@ -345,7 +345,7 @@ class Connection
     void cancel()
     {
         auto c = new Cancellation(this);
-        c.doCancel;
+        c.doCancelBlocking;
     }
 
     ///