Fix clippy warnings

src/functions.rs

@@ -279,7 +279,7 @@ pub trait Aggregate<A, T>
 {
     /// Initializes the aggregation context. Will be called prior to the first call
     /// to `step()` to set up the context for an invocation of the function. (Note:
-    /// `init()` will not be called if the there are no rows.)
+    /// `init()` will not be called if there are no rows.)
     fn init(&self) -> A;
 
     /// "step" function called once for each row in an aggregate group. May be called

src/vtab/mod.rs

@@ -247,7 +247,7 @@ impl<'a> Iterator for ValueIter<'a> {
     type Item = ValueRef<'a>;
 
     fn next(&mut self) -> Option<ValueRef<'a>> {
-        self.iter.next().map(|raw| { unsafe { ValueRef::from_value(*raw) } })
+        self.iter.next().map(|&raw| { unsafe { ValueRef::from_value(raw) } })
     }
 
     fn size_hint(&self) -> (usize, Option<usize>) {
@@ -372,8 +372,8 @@ unsafe extern "C" fn $connect(db: *mut ffi::sqlite3,
     use std::slice;
     use vtab::mprintf;
     let args = slice::from_raw_parts(argv, argc as usize);
-    let vec = args.iter().map(|cs| {
-        CStr::from_ptr(*cs).to_bytes()
+    let vec = args.iter().map(|&cs| {
+        CStr::from_ptr(cs).to_bytes()
     }).collect::<Vec<_>>();
     match $vtab::connect(db, aux, &vec[..]) {
         Ok(vtab) => {

src/vtab/series.rs

@@ -13,7 +13,6 @@ pub fn load_module(conn: &Connection) -> Result<()> {
     conn.create_module("generate_series", &SERIES_MODULE, aux)
 }
 
-
 init_module!(SERIES_MODULE,
              SeriesTab,
              SeriesTabCursor,