Handle wrongly formatted EXIF string field.

ui/file_manager/file_manager/foreground/js/metadata/exif_parser.js

Index: ui/file_manager/file_manager/foreground/js/metadata/exif_parser.js
diff --git a/ui/file_manager/file_manager/foreground/js/metadata/exif_parser.js b/ui/file_manager/file_manager/foreground/js/metadata/exif_parser.js
index e70fe3b5f1d7354cf848872761f61fc3b6dc58bf..5fb2e015b6a9e425f5c84c03bea63089766e249c 100644
--- a/ui/file_manager/file_manager/foreground/js/metadata/exif_parser.js
+++ b/ui/file_manager/file_manager/foreground/js/metadata/exif_parser.js
@@ -362,6 +362,7 @@ ExifParser.prototype.readTagValue = function(br, tag) {
       } else {
         tag.value = String.fromCharCode.apply(null, tag.value);
       }
+      this.validateAndFixStringTag_(tag);
       break;
 
     case 3: // Short
@@ -400,6 +401,23 @@ ExifParser.prototype.readTagValue = function(br, tag) {
 };
 
 /**
+ * Validates string tag value, and fix it if necessary.
+ * @param {!ExifEntry} tag A tag to be validated and fixed.
+ * @private
+ */
+ExifParser.prototype.validateAndFixStringTag_ = function(tag) {
+  if (tag.format === 2) { // string
+    // String should end with null character.
+    if (tag.value.charAt(tag.value.length - 1) !== '\0') {
+      tag.value += '\0';
+      tag.componentCount = tag.value.length;
+      this.vlog('Invalid format: 0x' + tag.id.toString(16) + '/' + tag.format +
+          ': Did not end with null character. Null character is appended.');
+    }
+  }
+};
+
+/**
  * Map from the exif orientation value to the horizontal scale value.
  * @const
  * @type {Array.<number>}