Declare support for Inno Setup 5.5.9

Data version is still 5.5.7, however new compiler-only flags have been
added to data entries. Fortunately these do no change the size of the
flags field.

VERSION

@@ -1,7 +1,7 @@
 innoextract 1.7-dev
 
 Known working Inno Setup versions:
-Inno Setup 1.2.10 to 5.5.8
+Inno Setup 1.2.10 to 5.5.9
 
 Bug tracker:
 http://innoextract.constexpr.org/issues

src/setup/data.cpp

@@ -144,6 +144,11 @@ void data_entry::load(std::istream & is, const version & version) {
 	if(version >= INNO_VERSION(5, 1, 13)) {
 		flagreader.add(SolidBreak);
 	}
+	if(version >= INNO_VERSION(5, 5, 7)) {
+		// Actually added in Inno Setup 5.5.9 but the data version was not bumped
+		flagreader.add(Sign);
+		flagreader.add(SignOnce);
+	}
 
 	options |= flagreader;
 
@@ -184,5 +189,7 @@ NAMES(setup::data_entry::flags, "File Location Option",
 	"chunk encrypted",
 	"chunk compressed",
 	"solid break",
+	"sign",
+	"sign once",
 	"bzipped",
 )

src/setup/data.hpp

@@ -54,6 +54,8 @@ struct data_entry {
 		ChunkEncrypted,
 		ChunkCompressed,
 		SolidBreak,
+		Sign,
+		SignOnce,
 
 		// obsolete:
 		BZipped