diff --git a/src/buffer.h b/src/buffer.h
index 588ac0d..08681a6 100644
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -65,8 +65,8 @@ inline bool Failure(const char *f, int l, const char *fn) {
 // -----------------------------------------------------------------------------
 class Buffer {
  public:
-  Buffer(const uint8_t *buffer, size_t len)
-      : buffer_(buffer),
+  Buffer(const uint8_t *data, size_t len)
+      : buffer_(data),
         length_(len),
         offset_(0) { }
 
@@ -74,7 +74,7 @@ class Buffer {
     return Read(NULL, n_bytes);
   }
 
-  bool Read(uint8_t *buffer, size_t n_bytes) {
+  bool Read(uint8_t *data, size_t n_bytes) {
     if (n_bytes > 1024 * 1024 * 1024) {
       return FONT_COMPRESSION_FAILURE();
     }
@@ -82,8 +82,8 @@ class Buffer {
         (offset_ > length_ - n_bytes)) {
       return FONT_COMPRESSION_FAILURE();
     }
-    if (buffer) {
-      std::memcpy(buffer, buffer_ + offset_, n_bytes);
+    if (data) {
+      std::memcpy(data, buffer_ + offset_, n_bytes);
     }
     offset_ += n_bytes;
     return true;
diff --git a/src/glyph.cc b/src/glyph.cc
index 1dadafc..4c6b60a 100644
--- a/src/glyph.cc
+++ b/src/glyph.cc
@@ -118,25 +118,27 @@ bool ReadGlyph(const uint8_t* data, size_t len, Glyph* glyph) {
 
     // Read the run-length coded flags.
     std::vector<std::vector<uint8_t> > flags(num_contours);
-    uint8_t flag = 0;
-    uint8_t flag_repeat = 0;
-    for (int i = 0; i < num_contours; ++i) {
-      flags[i].resize(glyph->contours[i].size());
-      for (size_t j = 0; j < glyph->contours[i].size(); ++j) {
-        if (flag_repeat == 0) {
-          if (!buffer.ReadU8(&flag)) {
-            return FONT_COMPRESSION_FAILURE();
-          }
-          if (flag & kFLAG_REPEAT) {
-            if (!buffer.ReadU8(&flag_repeat)) {
+    {
+      uint8_t flag = 0;
+      uint8_t flag_repeat = 0;
+      for (int i = 0; i < num_contours; ++i) {
+        flags[i].resize(glyph->contours[i].size());
+        for (size_t j = 0; j < glyph->contours[i].size(); ++j) {
+          if (flag_repeat == 0) {
+            if (!buffer.ReadU8(&flag)) {
               return FONT_COMPRESSION_FAILURE();
             }
+            if (flag & kFLAG_REPEAT) {
+              if (!buffer.ReadU8(&flag_repeat)) {
+                return FONT_COMPRESSION_FAILURE();
+              }
+            }
+          } else {
+            flag_repeat--;
           }
-        } else {
-          flag_repeat--;
+          flags[i][j] = flag;
+          glyph->contours[i][j].on_curve = flag & kFLAG_ONCURVE;
         }
-        flags[i][j] = flag;
-        glyph->contours[i][j].on_curve = flag & kFLAG_ONCURVE;
       }
     }
 
diff --git a/src/variable_length.cc b/src/variable_length.cc
index 944a17f..264eb0a 100644
--- a/src/variable_length.cc
+++ b/src/variable_length.cc
@@ -49,8 +49,8 @@ void Write255UShort(std::vector<uint8_t>* out, int value) {
 void Store255UShort(int val, size_t* offset, uint8_t* dst) {
   std::vector<uint8_t> packed;
   Write255UShort(&packed, val);
-  for (uint8_t val : packed) {
-    dst[(*offset)++] = val;
+  for (uint8_t packed_byte : packed) {
+    dst[(*offset)++] = packed_byte;
   }
 }