Initialize type arrays

 the type[6] array is used with strcmp. Currently this array isn't initialized, so it contains previous stack content, and if this content isn't '\0' then the strcmp might fail for no reason.

Author: nogakeren

minmea.c

@@ -336,7 +336,7 @@ bool minmea_scan(const char *sentence, const char *format, ...)
 
 bool minmea_talker_id(char talker[3], const char *sentence)
 {
-    char type[6];
+    char type[6] = {0};
     if (!minmea_scan(sentence, "t", type))
         return false;
 
@@ -352,7 +352,7 @@ enum minmea_sentence_id minmea_sentence_id(const char *sentence, bool strict)
     if (!minmea_check(sentence, strict))
         return MINMEA_INVALID;
 
-    char type[6];
+    char type[6] = {0};
     if (!minmea_scan(sentence, "t", type))
         return MINMEA_INVALID;