diff --git a/src/core/cmap.js b/src/core/cmap.js
index f6b6e8679..3f992bfb7 100644
--- a/src/core/cmap.js
+++ b/src/core/cmap.js
@@ -588,7 +588,7 @@ var BinaryCMapReader = (function BinaryCMapReaderClosure() {
             stream.readHex(start, dataSize);
             stream.readHexNumber(end, dataSize);
             addHex(end, start, dataSize);
-            code = stream.readNumber();
+            stream.readNumber(); // code
             // undefined range, skipping
             for (i = 1; i < subitemsCount; i++) {
               incHex(end, dataSize);
@@ -596,7 +596,7 @@ var BinaryCMapReader = (function BinaryCMapReaderClosure() {
               addHex(start, end, dataSize);
               stream.readHexNumber(end, dataSize);
               addHex(end, start, dataSize);
-              code = stream.readNumber();
+              stream.readNumber(); // code
               // nop
             }
             break;
diff --git a/src/core/fonts.js b/src/core/fonts.js
index 4d7354648..475be25a3 100644
--- a/src/core/fonts.js
+++ b/src/core/fonts.js
@@ -2447,7 +2447,6 @@ var Font = (function FontClosure() {
               }
               if (glyphId > 0 && hasGlyph(glyphId)) {
                 charCodeToGlyphId[charCode] = glyphId;
-                found = true;
               }
             }
           }
@@ -3084,7 +3083,6 @@ var Type1Font = (function Type1FontClosure() {
 
     // Get the data block containing glyphs and subrs information
     var headerBlock = getHeaderBlock(file, headerBlockLength);
-    headerBlockLength = headerBlock.length;
     var headerBlockParser = new Type1Parser(headerBlock.stream, false,
                                             SEAC_ANALYSIS_ENABLED);
     headerBlockParser.extractFontHeader(properties);
@@ -3097,7 +3095,6 @@ var Type1Font = (function Type1FontClosure() {
 
     // Decrypt the data blocks and retrieve it's content
     var eexecBlock = getEexecBlock(file, eexecBlockLength);
-    eexecBlockLength = eexecBlock.length;
     var eexecBlockParser = new Type1Parser(eexecBlock.stream, true,
                                            SEAC_ANALYSIS_ENABLED);
     var data = eexecBlockParser.extractFontProgram();
diff --git a/src/core/type1_parser.js b/src/core/type1_parser.js
index a0513efcf..2bbf259c2 100644
--- a/src/core/type1_parser.js
+++ b/src/core/type1_parser.js
@@ -578,7 +578,7 @@ var Type1Parser = (function Type1ParserClosure() {
           case 'Subrs':
             this.readInt(); // num
             this.getToken(); // read in 'array'
-            while ((token = this.getToken()) === 'dup') {
+            while (this.getToken() === 'dup') {
               var index = this.readInt();
               length = this.readInt();
               this.getToken(); // read in 'RD' or '-|'