Fixing ShExp use (0 means true)

modules/libjar/nsZipArchive.cpp

@@ -355,7 +355,7 @@ PRInt32 nsZipArchive::FindNext( nsZipFind* aFind, char * aBuf, PRUint16 aSize )
     else if ( aFind->mPattern == 0 )  
       found = PR_TRUE;            // always match
     else if ( aFind->mRegExp )
-      found = XP_RegExpMatch( item->name, aFind->mPattern, PR_FALSE );
+      found = (XP_RegExpMatch( item->name, aFind->mPattern, PR_FALSE ) == MATCH);
     else
       found = ( PL_strcmp( item->name, aFind->mPattern ) == 0 );
   }

modules/libjar/zipstub.h

@@ -63,9 +63,13 @@ typedef unsigned char       PRUint8;
 #define INVALID_SXP   -1
 #define NON_SXP       -2
 #define VALID_SXP     1
+#define MATCH 0
+#define NOMATCH 1
+#define ABORTED -1
 
 #define PR_RDONLY     "rb"
 #define PR_SEEK_SET   SEEK_SET
 
 #define XP_RegExpValid(a)       NON_SXP
 #define XP_RegExpMatch(a,b,c)   PR_FALSE
+