Fix some compilation warnings

ethminer/MinerAux.h

@@ -958,10 +958,14 @@ private:
 				if (client.isConnected())
 				{
 					if (client.current())
+					{
 						minelog << "Mining on PoWhash" << "#" + (client.currentHeaderHash().hex().substr(0, 8)) << ": " << mp << f.getSolutionStats();
+					}
 					else if (client.waitState() == MINER_WAIT_STATE_WORK)
+					{
 						minelog << "Waiting for work package...";
 					}
+				}
 				this_thread::sleep_for(chrono::milliseconds(m_farmRecheckPeriod));
 			}
 		}
@@ -993,10 +997,14 @@ private:
 				if (client.isConnected())
 				{
 					if (client.current())
+					{
 						minelog << "Mining on PoWhash" << "#" + (client.currentHeaderHash().hex().substr(0, 8)) << ": " << mp << f.getSolutionStats();
+					}
 					else if (client.waitState() == MINER_WAIT_STATE_WORK)
+					{
 						minelog << "Waiting for work package...";
 					}
+				}
 				this_thread::sleep_for(chrono::milliseconds(m_farmRecheckPeriod));
 			}
 		}

libethash-cl/ethash_cl_miner.h

@@ -10,7 +10,6 @@
 #elif defined(__GNUC__)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
-#pragma GCC diagnostic ignored "-Wignored-attributes"
 #endif
 
 #include "CL/cl.hpp"