Merge if and catch block

h2/src/main/org/h2/util/CacheLRU.java

@@ -51,16 +51,17 @@ public class CacheLRU implements Cache {
         this.writer = writer;
         this.fifo = fifo;
         this.setMaxMemory(maxMemoryKb);
-        long tmpLen;
         try {
-            tmpLen = MathUtils.nextPowerOf2(maxMemory / 64);
+            // Since setMaxMemory() ensures that maxMemory is >=0,
+            // we don't have to worry about an underflow.
+            long tmpLen = maxMemory / 64;
+            if (tmpLen > Integer.MAX_VALUE) {
+                throw new IllegalArgumentException();
+            }
+            this.len = MathUtils.nextPowerOf2((int) tmpLen);
         } catch (IllegalArgumentException e) {
             throw new IllegalStateException("This much cache memory is not supported: " + maxMemoryKb + "kb", e);
         }
-        if (tmpLen > Integer.MAX_VALUE) {
-            throw new IllegalStateException("do not support this much cache memory: " + maxMemoryKb + "kb");
-        }
-        this.len = (int) tmpLen;
         this.mask = len - 1;
         clear();
     }