Fix some comments.

build/prepro.js

@@ -157,7 +157,7 @@ function stripComments(str) {
 		if (quote) {
 			// When checking for quote escaping, we also need to check that the
 			// escape sign itself is not escaped, as otherwise '\\' would cause
-			// the wrong impression of and endlessly open string:
+			// the wrong impression of an unclosed string:
 			if (str[i] === quoteSign && (str[i - 1] !== '\\' || str[i - 2] === '\\'))
 				quote = false;
 		} else if (blockComment) {

src/svg/SvgExport.js

@@ -349,7 +349,7 @@ new function() {
 				attrs[entry.attribute] = value == null
 					? 'none'
 					: entry.type === 'color'
-						? value.toCss(false)
+						? value.toCss(false) // false for withAlpha, see above
 						: entry.type === 'array'
 							? value.join(',')
 							: entry.type === 'number'