fix --blocksz minimum check

--blocksz CLI value was checking value too low. Would run but print
errors. Now catches low value during argument parsing and exits.

src/Readers/syslogprocessor.rs

@@ -171,7 +171,10 @@ impl std::fmt::Debug for SyslogProcessor {
 impl SyslogProcessor {
     /// `SyslogProcessor` has it's own miminum requirements for `BlockSz`.
     /// Necessary for `blockzero_analysis` functions to have chance at success.
-    pub const BLOCKSZ_MIN: BlockSz = 0x100;
+    #[cfg(any(debug_assertions,test))]
+    pub const BLOCKSZ_MIN: BlockSz = 0x2;
+    #[cfg(not(any(debug_assertions,test)))]
+    pub const BLOCKSZ_MIN: BlockSz = 0x40;
     /// allow "streaming" (`drop`ping data in calls to `find_sysline`)?
     const STREAM_STAGE_DROP: bool = true;
     /// use LRU caches in underlying components. For development and testing experiments

src/bin/bin.rs

@@ -365,8 +365,9 @@ fn cli_process_blocksz(blockszs: &String) -> std::result::Result<u64, String> {
         };
     }
 
-    if ! (BLOCKSZ_MIN <= blocksz_ && blocksz_ <= BLOCKSZ_MAX) {
-        return Err(format!("--blocksz must be {} ≤ BLOCKSZ ≤ {}, it was {:?}", BLOCKSZ_MIN, BLOCKSZ_MAX, blockszs));
+    let max_min = std::cmp::max(BLOCKSZ_MIN, SyslogProcessor::BLOCKSZ_MIN);
+    if ! (max_min <= blocksz_ && blocksz_ <= BLOCKSZ_MAX) {
+        return Err(format!("--blocksz must be {} ≤ BLOCKSZ ≤ {}, it was {:?}", max_min, BLOCKSZ_MAX, blockszs));
     }
 
     Ok(blocksz_)