[barcode] Prototype buglet in code128.c

[Cloyce D. Spradling]

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GCC doesn't complain about this, but Sun Forte 6u2 does.  The trivial patch
is attached.

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Cloyce

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diff -ur barcode-0.97/code128.c barcode-0.97.str/code128.c
--- barcode-0.97/code128.c	Tue Nov  7 11:52:15 2000
+++ barcode-0.97.str/code128.c	Fri Nov  9 11:24:40 2001
@@ -72,7 +72,7 @@
  * code 128-b includes all printable ascii chars
  */
 
-int Barcode_128b_verify(char *text)
+int Barcode_128b_verify(unsigned char *text)
 {
     if (!strlen(text))
 	return -1;


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