Fix compilation for enabled GCC_WARN_UNUSED_PARAMETER

fmdb.xcodeproj/project.pbxproj

@@ -874,6 +874,7 @@
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNINITIALIZED_AUTOS = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_PARAMETER = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
@@ -910,6 +911,7 @@
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNINITIALIZED_AUTOS = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_PARAMETER = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				SDKROOT = macosx;
 			};

src/fmdb/FMDatabaseQueue.m

@@ -305,7 +305,7 @@ - (BOOL)checkpoint:(FMDBCheckpointMode)mode name:(NSString *)name logFrameCount:
     
     FMDBRetain(self);
     dispatch_sync(_queue, ^() {
-        result = [self.database checkpoint:mode name:name logFrameCount:NULL checkpointCount:NULL error:&blockError];
+        result = [self.database checkpoint:mode name:name logFrameCount:logFrameCount checkpointCount:checkpointCount error:&blockError];
     });
     FMDBRelease(self);