Merge pull request #271 from aryounce/patch-1

Added cast to fix warning on 32-bit builds.

src/fmdb/FMResultSet.m

@@ -293,7 +293,7 @@ - (NSData*)dataForColumnIndex:(int)columnIdx {
     
     NSMutableData *data = [NSMutableData dataWithLength:(NSUInteger)dataSize];
     
-    memcpy([data mutableBytes], sqlite3_column_blob([_statement statement], columnIdx), dataSize);
+    memcpy([data mutableBytes], sqlite3_column_blob([_statement statement], columnIdx), (size_t)dataSize);
     
     return data;
 }