Fix an uninitialised variable in PDF font code.

Thanks to Paul Curtis for reporting that 'if (i != prev+1)' would be
undefined on the first pass through this loop, because prev was never
initialised beforehand. Initialise it to a safe value.

1 files changed, 2 insertions, 0 deletions

diff --git a/bk_pdf.c b/bk_pdf.c
index 10b9fdd..c66b742 100644
--- a/bk_pdf.c
+++ b/bk_pdf.c
@@ -317,6 +317,8 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
 	    objtext(font, "/Subtype /Type1\n");
 	    objtext(font, "\n/Encoding <<\n/Type /Encoding\n/Differences [");
 
+            prev = 256; /* ensure we compare unequal in 1st iteration */
+
 	    for (i = 0; i < 256; i++) {
 		char buf[20];
 		if (fe->vector[i] == NOGLYPH)