Address the case when time_t is 64bits

[panlinux]

Fixes: #1264

This fixes the actual build error, and also all the warnings surrounding time_t being 64bits.

The minimal fix is just this bit:

--- a/src/rrd_fetch_libdbi.c
+++ b/src/rrd_fetch_libdbi.c
@@ -410,7 +470,7 @@ rrd_fetch_fn_libdbi(
   int isunixtime=1;
   long gmt_offset=0;
   /* the result-set */
-  long r_timestamp,l_timestamp,d_timestamp;
+  time_t r_timestamp,l_timestamp,d_timestamp;
   double r_value,l_value,d_value;
   int r_status;
   int rows;

But I think the warnings should also be addressed.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 16 lines in your changes missing coverage. Please review.

Project coverage is 51.07%. Comparing base (9f6c6cc) to head (fcc946d).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
src/rrd_fetch_libdbi.c	0.00%	16 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1265      +/-   ##
==========================================
- Coverage   51.10%   51.07%   -0.04%     
==========================================
  Files          45       45              
  Lines       18251    18250       -1     
==========================================
- Hits         9328     9321       -7     
- Misses       8923     8929       +6     

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[oetiker]

please add an entry to the changes file!

[oetiker]

thanks!