MFH: Fix loss of backslash at end of heredoc; For bug #44830 (Very minor issue with backslash in heredoc)

NEWS

@@ -7,6 +7,7 @@ PHP                                                                        NEWS
   as function parameter. (Rob)
 - Fixed bug #44836 (putenv() crashes, avoid direct reference of environ in    
   POSIX systems). (Ilia, delphij at FreeBSD dot org)
+- Fixed bug #44830 (Very minor issue with backslash in heredoc). (Matt)
 - Fixed bug #44811 (Improve error message when creating a new SoapClient that 
   contains invalid data). (Markus Fischer, David C)
 - Fixed bug #44798 (Memory leak assigning value to attribute). (Ilia)

Zend/zend_language_scanner.l

@@ -792,9 +792,7 @@ static void zend_scan_escape_string(zval *zendlval, char *str, int len, char quo
 	while (s<end) {
 		if (*s=='\\') {
 			s++;
-			if (s>=end) {
-				continue;
-			}
+
 			switch(*s) {
 				case 'n':
 					*t++ = '\n';
@@ -1808,9 +1806,7 @@ HEREDOC_CHARS       ("{"*([^$\n\r\\{]|("\\"[^\n\r]))|{HEREDOC_LITERAL_DOLLAR}|({
 	while (s<end) {
 		if (*s=='\\') {
 			s++;
-			if (s>=end) {
-				continue;
-			}
+
 			switch(*s) {
 				case '\\':
 				case '\'':