[gs-code-review] Fix for 687515, Some A3 Landscape Postscript files are transformed in Portrait

[Alex Cherepanov]

Make pdf_dominant_rotation() return unknown text rotation for the file
without text. It returned 0 rotation before, which excluded
consideration of DSC comments later on.
Fix bug 687515

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Index: gs/src/gdevpdf.c
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RCS file: /cvs/ghostscript/gs/src/gdevpdf.c,v
retrieving revision 1.94
diff -b -u -r1.94 gdevpdf.c
--- gs/src/gdevpdf.c	27 May 2004 19:05:36 -0000	1.94
+++ gs/src/gdevpdf.c	13 Jun 2004 21:25:48 -0000
@@ -818,7 +818,7 @@
 pdf_dominant_rotation(const pdf_text_rotation_t *ptr)
 {
     int i, imax = -1;
-    long max_count = -1;
+    long max_count = 0;
     static const int angles[] = { pdf_text_rotation_angle_values };
 
     for (i = 0; i < countof(ptr->counts); ++i) {