Fix clippy::ptr_offset_with_cast

src/format/chapter/chapter.rs

@@ -13,9 +13,7 @@ impl<'a> Chapter<'a> {
 	}
 
 	pub unsafe fn as_ptr(&self) -> *const AVChapter {
-		*(*self.context.as_ptr())
-			.chapters
-			.offset(self.index as isize)
+		*(*self.context.as_ptr()).chapters.add(self.index)
 	}
 }
 

src/format/chapter/chapter_mut.rs

@@ -23,9 +23,7 @@ impl<'a> ChapterMut<'a> {
 	}
 
 	pub unsafe fn as_mut_ptr(&mut self) -> *mut AVChapter {
-		*(*self.context.as_mut_ptr())
-			.chapters
-			.offset(self.index as isize)
+		*(*self.context.as_mut_ptr()).chapters.add(self.index)
 	}
 }
 

src/format/stream/stream.rs

@@ -20,7 +20,7 @@ impl<'a> Stream<'a> {
 	}
 
 	pub unsafe fn as_ptr(&self) -> *const AVStream {
-		*(*self.context.as_ptr()).streams.offset(self.index as isize)
+		*(*self.context.as_ptr()).streams.add(self.index)
 	}
 }
 

src/format/stream/stream_mut.rs

@@ -21,9 +21,7 @@ impl<'a> StreamMut<'a> {
 	}
 
 	pub unsafe fn as_mut_ptr(&mut self) -> *mut AVStream {
-		*(*self.context.as_mut_ptr())
-			.streams
-			.offset(self.index as isize)
+		*(*self.context.as_mut_ptr()).streams.add(self.index)
 	}
 }
 

src/util/format/sample.rs

@@ -190,7 +190,7 @@ impl Index<usize> for Buffer {
 			panic!("out of bounds");
 		}
 
-		unsafe { slice::from_raw_parts(*self.buffer.offset(index as isize), self.size as usize) }
+		unsafe { slice::from_raw_parts(*self.buffer.add(index), self.size as usize) }
 	}
 }