Fix typos in the source code docs
diff --git a/src/hb-face.cc b/src/hb-face.cc
index 5fcc4e9..f6ca19f 100644
--- a/src/hb-face.cc
+++ b/src/hb-face.cc
@@ -197,7 +197,7 @@
* a face index into that blob.
*
* The face index is used for blobs of file formats such as TTC and
- * and DFont that can contain more than one face. Face indices within
+ * DFont that can contain more than one face. Face indices within
* such collections are zero-based.
*
* <note>Note: If the blob font format is not a collection, @index
diff --git a/src/hb-subset-instancer-solver.cc b/src/hb-subset-instancer-solver.cc
index 5c0f43a..7a2735c 100644
--- a/src/hb-subset-instancer-solver.cc
+++ b/src/hb-subset-instancer-solver.cc
@@ -125,7 +125,7 @@
return result_t{}; // No overlap
/* case 2: Only the peak and outermost bound fall outside the new limit;
- * we keep the deltaset, update peak and outermost bound and and scale deltas
+ * we keep the deltaset, update peak and outermost bound and scale deltas
* by the scalar value for the restricted axis at the new limit, and solve
* recursively.
*
