Typo fix.

diff --git a/pcx.c b/pcx.c
index f55f166a8ef565fd292012de999690961584d4ae..33532d8becb613544990a5f3deca179d3dd7b27b 100644 (file)
--- a/pcx.c
+++ b/pcx.c
@@ -99,7 +99,7 @@ data_read(void)
                        sscanf(ibuf, "W  %6c %c%lf %c%lf %s %s %ld", 
                                name, &latdir, &lat, &londir, &lon, 
                                date, time, &alt);
-                       if (alt = -9999) {
+                       if (alt == -9999) {
                                alt = unknown_alt;
                        }
                        sscanf(&ibuf[60], "%40c",