tweaks: avoid two compiler warnings

src/color.c

@@ -343,7 +343,7 @@ void reset_multis_for_id(filestruct *fileptr, int index)
 void reset_multis(filestruct *fileptr, bool force)
 {
     const colortype *ink;
-    int nobegin, noend;
+    int nobegin = 0, noend = 0;
     regmatch_t startmatch, endmatch;
 
     /* If there is no syntax or no multiline regex, there is nothing to do. */

src/rcfile.c

@@ -658,7 +658,7 @@ void parse_colors(char *ptr, int rex_flags)
     /* Now for the fun part.  Start adding regexes to individual strings
      * in the colorstrings array, woo! */
     while (ptr != NULL && *ptr != '\0') {
-	colortype *newcolor;
+	colortype *newcolor = NULL;
 	    /* The container for a color plus its regexes. */
 	bool goodstart;
 	    /* Whether the start expression was valid. */