eepro100: initialize a variable in all cases

Compiling with GCC 4.6.0 20100925 produced warnings:
/src/qemu/hw/eepro100.c: In function 'eepro100_read4':
/src/qemu/hw/eepro100.c:1351:14: error: 'val' may be used uninitialized in this function [-Werror=uninitialized]
/src/qemu/hw/eepro100.c: In function 'eepro100_read2':
/src/qemu/hw/eepro100.c:1328:14: error: 'val' may be used uninitialized in this function [-Werror=uninitialized]
/src/qemu/hw/eepro100.c: In function 'eepro100_read1':
/src/qemu/hw/eepro100.c:1285:13: error: 'val' may be used uninitialized in this function [-Werror=uninitialized]

Fix by initializing 'val' at start.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

hw/eepro100.c

diff --git a/hw/eepro100.c b/hw/eepro100.c
index 5f6dcb6..218472d 100644
--- a/hw/eepro100.c
+++ b/hw/eepro100.c
@@ -1290,7 +1290,7 @@
 
 static uint8_t eepro100_read1(EEPRO100State * s, uint32_t addr)
 {
-    uint8_t val;
+    uint8_t val = 0;
     if (addr <= sizeof(s->mem) - sizeof(val)) {
         memcpy(&val, &s->mem[addr], sizeof(val));
     }
@@ -1333,7 +1333,7 @@
 
 static uint16_t eepro100_read2(EEPRO100State * s, uint32_t addr)
 {
-    uint16_t val;
+    uint16_t val = 0;
     if (addr <= sizeof(s->mem) - sizeof(val)) {
         memcpy(&val, &s->mem[addr], sizeof(val));
     }
@@ -1356,7 +1356,7 @@
 
 static uint32_t eepro100_read4(EEPRO100State * s, uint32_t addr)
 {
-    uint32_t val;
+    uint32_t val = 0;
     if (addr <= sizeof(s->mem) - sizeof(val)) {
         memcpy(&val, &s->mem[addr], sizeof(val));
     }